Continuous beeping sound when turning on the computer. BIOS signals short and long beeps when the PC is turned on. What causes the system unit to beep?

Surely you know that when you turn on your computer, it makes a characteristic sound that can tell us a lot. As a rule, 1 short beep indicates that the computer is fully operational and ready to boot.

However, what can 4 short beeps mean when you turn on your computer?

Different types of BIOS correspond to different types of signals. Let's look at the three main types of BIOS - AMI BIOS, AWARD BIOS, PHOENIX BIOS.

4 short beeps for AMI BIOS - indicate a system timer malfunction. And the other two types of BIOS do not have this kind of signals at all. Therefore, if you hear 4 short beeps when you turn on your computer, it means you have an AMI BIOS. What ways to solve this problem exist?

• You can try to restore BIOS settings default, in order to reset incorrectly set values.
• Change the battery to motherboard, since the battery is already “depleted”.

• Get the slats random access memory, clean them from dust and rub the contacts with a regular pencil wash.
• In general, rid the system unit of dust. This is done simply: turn on the vacuum cleaner and, at low speeds, rid the computer of dust.
• Carefully inspect the capacitors - they should not be swollen or oxidized.

Typically, following these steps is enough to fix the system timer error. However, there are options for components to fail, and the motherboard may also break. To identify malfunctions, you should diagnose the computer, which is best done in the appropriate service.

AMI BIOS signals

• 1 short beep - no problems detected;
• 2 short - RAM malfunction;
• 3 short - RAM malfunction;
• 4 short - motherboard malfunction;
• 5 short - CPU malfunction;
• 6 short - problem with the keyboard;
• 7 short - motherboard malfunction;
• 8 short - a problem with the video card memory;
• 9 short - the motherboard BIOS is faulty;
• 10 short - errors in the CMOS chip of the motherboard or the battery powering it has died;
• 11 short - motherboard cache error;
• 1 long + 1 short - the power supply is faulty;
• 1 long + 2 short - a problem with the video card or RAM connectors;
• 1 long + 3 short - the video card is faulty or unsupported RAM modules are connected to the motherboard connectors;
• 1 long + 4 short - no video card;
• 1 long + 8 short - the video card is faulty or the monitor is not connected to it;
• 3 long - one or more RAM modules are faulty;
• 5 short + 1 long - there is no RAM or the RAM modules are not installed correctly;
• A constant beep indicates that the computer has overheated or there are problems with the RAM or power supply.

Let's assume you have The computer beeps when turned on and no image appears on the screen. Should I call a professional right away or can I solve the problem myself? Ideally, of course, it is better for the repairs to be carried out by a person who understands this. However, if you don’t have time to wait for the master or you just want save on repairs, then you can use the tips in this article. Many malfunctions can be caused by poor contact and such a problem you can fix it yourself.

Why is the computer beeping?

When a malfunction occurs, the system notifies us with a combination of sound signals that tell us what kind of malfunction has occurred. In fact, the beep sounds even if everything is in order - 1 short.

What are the types of BIOS signals?

Before starting diagnostics, it is better to disconnect everything unnecessary (keyboard, mouse, printer, flash drives, etc.).

The most common signals you can hear are:

Diagnostics and troubleshooting

After you have managed to identify your problem by the sound signal, you can try to fix it. Unplug your computer and follow the steps below in order, depending on what problem you have identified (RAM, video card or power supply). Check your computer to turn it on after completing each step.

RAM error

1. Remove all memory sticks except one (if you have several).
2. Move the memory to another slot.
3. Pull out the memory stick, clean the contacts and insert it back into the slot.
4. Replace memory.

More details about how and how to clean RAM contacts are shown in the article -.

Video card error

1. Pull out the video card and insert it back.
2. Pull out the video card, clean the contacts with an eraser and insert it back into the slot.
3. Replace the video card.

The video card contacts are cleaned in the same way as the RAM contacts.

Problems with the power supply

1. Open the power supply and look for any swollen capacitors. If found, ask someone to resolder bad capacitors if you do not know how to handle a soldering iron yourself.
2. Replace the power supply.

If your computer emits combinations of sound signals that differ from those described above, then use the tables of leading BIOS manufacturers, such as Award BIOS And AMI BIOS.

Award BIOS Signals

AMI BIOS signals

When you turn on the computer, the system unit usually makes a squeaking noise. This is a short single signal that indicates the functionality of the equipment. But it happens that the computer makes an unusual sound, longer or several short ones. What does this mean? The squeak is the result of performance testing performed by the hardware. But today we’ll talk about how to decipher this sound.

If the system unit beeps in Award BIOS

So, if the system unit beeps when turned on, this may indicate either that everything is in order or that any of the parts have failed. But in order to find out the meaning of the signal, you first need to determine the type of BIOS that is installed on the motherboard. This can be done by pressing the Del button during early boot. Also possible if necessary.

If the Award BIOS is installed, then one signal, short in duration, as in other systems, indicates that everything is in order. The test was successful, the computer is ready for use. Some systems may not make any sounds at all. If, when you turn on the computer, one continuous, long beep is emitted, then the power supply is most likely faulty. In this case, it will need to be replaced.

Two short beeps may indicate that minor errors have been detected. In order to fix them, try to check how well the cables are secured in the connection connectors hard drive and motherboard. Three long beeps indicate that an error occurred in the keyboard controller. You can try to fix it by restarting the computer. If this does not help, you may need to replace the motherboard.

One long and two short beeps in Award BIOS is the most common error. The signal indicates that there are problems with the video card. You can correct the situation by removing and reinstalling the motherboard. In addition, you should check the contacts of the video card and how it is connected to the monitor. It is possible that this part will not need to be replaced.

Among the common problems that are easy to deal with on your own is one short signal that repeats all the time. This indicates that there are problems with the power supply. It is quite possible that you just need to remove the dust that has accumulated in it. This procedure should be done when the computer is disconnected from all power sources.

Signals for AMI BIOS

If it doesn’t beep, and there’s a black screen on the monitor in front of us, then most likely the breakdown is quite serious and you’ll have to contact a specialist. Most likely, in this situation the malfunction is too serious. However, first check the connection to the monitor, as well as all other connection pins. If two short beeps sound, then there may be a problem with the RAM. Most likely, modules will need to be replaced. The same can be expected after three short squeaks are heard. First, try restarting your computer and see if the error goes away.

If six short beeps sound, the fault lies with the keyboard controller. First you need to check its connection with motherboard. If nothing happens, it is recommended to replace the keyboard. After this, you should check the functionality of the system unit. If the previous steps did not help, then most likely you need to replace the motherboard.

Five short beeps are a sign that the problem is with the processor. It may need to be replaced. In this case, you will need to choose the right processor; you will learn how to do this. Seven short beeps indicate a motherboard malfunction. One long and two short beeps indicate problems with the video card. This is also indicated by one long and three short squeaks, one long and eight short squeaks. If a similar problem occurs, first you need to check the connection between the video card and the motherboard. If everything is in order, you may need to replace this part.

Signals for Phoenix BIOS

Many users wonder why the system unit beeps periodically. As is clear from the above, the problem can be anything. The main thing is to correctly determine what exactly the reason is. So, for Phoenix BIOS, one short, one long and three short beeps indicate that an error occurred in the CMOS recording. In this case, you will need to replace the memory chip. If this does not help, then you will need a new motherboard.

Problems with the same component are indicated by signals produced according to the “1-2-1” scheme. Malfunctions related to RAM are also indicated by the squeak “1-3-1”. One long and eight short beeps indicate that the video adapter is not working. Another reason for this signal may be that the monitor is not connected. Check the connections of all cables, and then reboot the system unit.

Short beeps that are constantly repeated indicate that the power supply is not working properly. In order to fix this, you first need to check the functionality of this part. Also, check to see if the cords are broken and if the surge protector is working properly. If problems arise after this, you may still need to replace the power supply with a new one.

You can reset the BIOS by removing the battery. Another way is to use a special jumper. You can find out where it is located by carefully reading the instructions for the motherboard.

So, most of these problems can be solved on your own if you know exactly how to do it. For example, it’s quite easy to check the connection of a monitor or keyboard to the system unit. It is also easy to replace the battery on the motherboard. However, if the problem is more serious, then it is better to initially contact specialists if you are not confident in your abilities, so as not to aggravate it even more.

Hello everyone, have you noticed that when you turn on the computer, it makes a beeping noise and then boots up... this is if everything is fine, but if it starts to beep differently and nothing happens on the screen, then this is a reason to think and try to figure out why the system unit is beeping? Every time , turning on the computer, you can hear the system unit squeaking. This signal shows the performance of the hardware, which few people know how to decipher. So, let's try to figure out why the system unit beeps?

Decoding system unit signals

As you know, the system unit accommodates many special-purpose devices. When turned on, the computer emits a signal about the result of testing this software (fan, processor, input/output devices, memory, video card, etc.).

The decoding of the squeak emitted by the system unit is given in the table:

Fixing hardware failures

If errors occur in individual hardware parts, which are indicated by a squeaking sound from the system unit, it is necessary, first of all, to check the connections of these devices to the power supply.

When there is no signal and along with it any signs of computer life (the button indication is not illuminated, the fan is not making noise, there is no image on the monitor), If the power supply is faulty, then it will need to be replaced. If when you press the power button, at least the fan reacts, then you may have to buy a new processor. Although it would also be a good idea to check the motherboard power cord: it may have come loose.

If errors occur in the BIOS, you need to go to the settings menu using the Del key and set the optimal parameters. However, not everyone knows the correct settings; in this case, it is better to set them to default (F5 key); to save the changes, press the F10 key and Enter. You can also reset the BIOS settings by removing the battery on the motherboard for seconds and putting it back. If it doesn’t help, you’ll have to reflash the menu at the hardware level.

The absence of a keyboard is checked for the presence of its plug in the PS/2 socket. It was discovered that it is connected, which means that the device is not working properly and will most likely need to be replaced.

Errors in RAM operation are first checked for the presence of these sticks in the motherboard connector. Then the memory cards are removed, cleaned of dust, and inserted into the slots one by one. In this case, the system unit is turned on every time. If you hear a squeak, it means the board is broken.

Software settings for the video card are carried out in the BIOS. The physical health of the device is checked using another known working video adapter. If you find that the device does not work, then you need to clean it from dust and see if the power plug is connected to the board, since it is supplied by a separate cable to which you cannot connect anything else. You can also check the display connection and whether it is working. These manipulations do not help, which means the video card needs to be replaced.

You can try to fix a broken system timer by resetting the BIOS, otherwise you will need to repair or replace the motherboard.

Checking the operation of the processor consists of cleaning it from dust, as well as preventing overheating of the radiator due to a malfunctioning fan.

CMOS writing errors occur when flashing the BIOS firmware. The cache memory is corrected when the BIOS is reset or when the computer is repaired and the processor is replaced. In order to reset the BIOS, it is not necessary to remove the battery; you can use a special jumper called a jumper. You can find out where it is located in the motherboard manual.

If you can’t carry out the repair yourself, then it’s better to contact specialists who will guarantee that the system unit beeps will not happen again, but you already know why the system unit beeps and what it threatens you with.

In contact with

The computer does not start and the system unit beeps strangely when you turn on the power? Or does the download occur, but is it also accompanied by a strange squeaking sound? In general, this is not so bad; there could be more difficulties if the computer did not turn on, without giving any signals at all. And the mentioned squeak is a BIOS signal that tells the user or computer repair specialist what kind of computer hardware there are problems with, which makes it much easier to diagnose problems and fix them. In addition, if the computer beeps when turned on, then at least one positive conclusion can be drawn: the computer’s motherboard is not burned out.

These diagnostic signals differ for different BIOSes from different manufacturers, but the tables below are suitable for almost any computer and will allow you to generally understand exactly what problem has arisen and in what direction to move to solve it.

Signals for AWARD BIOS

Typically, a message about which BIOS is used on your computer appears when the computer boots. In some cases, there is no sign notifying about this (for example, H2O bios appears on the laptop screen), but even then, as a rule, it is one of the types listed here. And given the fact that the signals practically do not overlap for different brands, diagnosing the problem when the computer beeps will not be difficult. So, Award BIOS signals.

Type of signal (how the computer beeps) Error or problem to which this signal corresponds; one short signal; no errors were detected during boot; as a rule, after this the normal boot of the computer continues. (Provided that the operating system is installed and the boot hard drive or other media is in good condition), two short errors were detected during boot that are not critical. These may include problems with the contacts of the cables on the hard drive, time and date parameters due to a dead battery, and other 3 long signals Keyboard error - it’s worth checking that the keyboard is connected correctly and in good condition, and then reboot the computer 1 long and one short Problems with the modules random access memory. You can try to remove them from the motherboard, clean the contacts, put them in place and try to turn on the computer again, one long and 2 short. Video card malfunction. Try removing the video card from the slot on the motherboard, cleaning the contacts, and inserting it. Pay attention to the swollen capacitors on the video card. 1 long and three short Any problem with the keyboard, and in particular during its initialization. Check that it is connected to the computer correctly. one long and 9 short An error occurred while reading ROM. Restarting the computer or changing the firmware of the permanent memory chip may help. 1 short, repeated malfunction or other problem with the computer's power supply. You can try cleaning it from dust. The power supply may need to be replaced.

AMI (American Megatrends) BIOS

1 short beep of errors when turned on, no problems 2 short beeps Problems with RAM modules. It is recommended to check that they are installed correctly on the motherboard 3 short Another type of RAM malfunction. Also check the correct installation and contacts of the RAM modules 4 short beeps System timer malfunction five short Problems with the processor 6 short Problems with the keyboard or its connection 7 short any malfunctions in the computer motherboard 8 short problems with video memory 9 short Error in BIOS firmware 10 short occurs when you try to write to CMOS memory and cannot write it. 11 short Problems with external cache memory 1 long and 2, 3 or 8 short Problems with the computer’s video card. It is also possible that the connection to the monitor is incorrect or missing.

Phoenix BIOS

1 beep - 1 - 3 error when reading or writing CMOS data 1 - 1 - 4 Error in the data written in the BIOS chip 1 - 2 - 1 Any malfunctions or errors of the motherboard 1 - 2 - 2 Error when starting the DMA controller 1 - 3 - 1 (3, 4) Computer RAM error 1 - 4 - 1 Malfunction of the computer motherboard 4 - 2 - 3 Problems with keyboard initialization

What should I do if my computer makes sounds when I turn it on?

You can try to solve some of these problems yourself if you know how to do it. There is nothing easier than checking that the keyboard and monitor are connected correctly to the computer system unit; it is somewhat more difficult to replace the battery on the motherboard. In some other cases, I would recommend contacting specialists who are professionally involved in computer help and having the necessary professional skills to solve specific computer hardware problems. In any case, you shouldn’t worry too much if the computer suddenly starts beeping when you turn it on - most likely, this can be fixed relatively easily.

Diagnosing a computer malfunction is not such a difficult task if the device’s motherboard is working properly and there are no problems loading the BIOS. The basic system, whose task is to determine the boot process of the computer, serves as an excellent diagnostic tool if you know how to read the information it provides.

The BIOS has its own language through which the system communicates with users. The sound signals (squeaks) emitted when the system boots are a kind of “Morse code”, and they can be used to determine the malfunction if deciphered correctly. When the computer beeps and does not turn on, you should immediately determine the type of BIOS that is installed in the motherboard. To do this, press the Del button on the keyboard immediately after turning on the computer. The BIOS will start, and it will be possible to determine its type, and then, based on the description of the signals, the computer user can easily determine the malfunction that the base system indicates with the help of beeps.

If the diagnostic signals of any basic system can be compared to Morse code, then it is BIOS Phoenix. Its creators developed own system notifying the user about errors, which is based on the supply of short alternating signals. They should be “read” as follows:

• 1-2-1: malfunction of the motherboard. It is recommended to remove the battery from the board and leave it without power for 20-30 minutes. After this, the battery is reinstalled, and you can make a new attempt to boot the computer;
• 1-3-1: errors in reading information from memory modules. The RAM needs to be replaced. If several modules are installed in the computer, you can leave one and try to turn on the computer, thus identifying the memory stick that is faulty;
• 1-4-1: Problems loading the motherboard; it may need to be replaced. It is recommended to restart the computer, and if the problem is not solved, then disconnect and reconnect all elements;
• 1-4-2: The motherboard cannot read data from RAM. Check that the modules are installed correctly, as well as the slots in which they are installed;
• 1-1-3: There is a problem when reading information from CMOS memory. In such a situation, it is recommended to replace the battery that powers the CMOS memory.
• 1-2-3: problems arise in the data channel associated with DMA memory. In such a situation, it is recommended to replace the motherboard;
• 1-3-3/1-3-4/4-3-1: checking information coming from the first 64 kilobytes of RAM leads to an error. In such a situation, it is necessary to remove all memory modules from the system unit and connect them one by one to determine the plug that causes the problem. If the system unit has one RAM module connected to the motherboard, it needs to be replaced;
• 1-4-3/4-2-1/4-3-4: the malfunction is related to the system timer, which is responsible for the operation of the motherboard. In such a situation, you can reset the timer by removing the battery for half an hour and then installing it again. If the procedures carried out did not solve the problem, the motherboard will need to be replaced;
• 1-1-4: Errors occur when loading the Phoenix BIOS, which is flashed onto the Flash card in the motherboard. It is necessary to flash the memory card or replace the BIOS chip;
• 1-4-4: the problem arises with the motherboard ports responsible for input/output of information. It is necessary to check the connection of the mouse, keyboard, monitor (if it is connected directly to the motherboard). It is recommended to disconnect all connected devices and turn on the computer, connecting them one by one to find the I/O element that is causing problems;
• 3-1-1/3-1-2: The problem occurs during the DMA channel check phase. In such a situation, the motherboard will need to be replaced;
• 3-1-4: unspecified error in the operation of the motherboard. In such a situation, it is recommended to disconnect all components from the board, remove the battery from it and leave it without power for 30-40 minutes. After this, the battery and all elements are installed in place, and then the system is started. If the problem cannot be solved in this way, the motherboard will need to be replaced;
• 3-2-4/4-2-3: The malfunction is caused by the connector and controller for connecting the keyboard. The motherboard cannot receive information from the input device. If the error persists after rebooting, the motherboard may need to be replaced;
• 3-3-4: The problem is with the computer's video card. If the video memory is built into the motherboard, you will need to replace the motherboard or install discrete graphics and try to start the computer while the monitor is connected to it. If your computer already has a discrete graphics card, make sure it is connected correctly;
• 4-2-4: Motherboard diagnostic systems detected problems on the side of reading data from the central processor. It is recommended to check the socket for bent legs;
• 4-4-1: an error in the operation of the RS-232 port, which is better known as the “serial port”. Most often it is used to connect an uninterruptible power supply. To diagnose the error, try disconnecting all consumers from it and starting the computer;
• 4-4-2: A legacy error that indicates a parallel port failure. It was previously used to transfer data from a printer to a computer, but now such ports are not provided on mass-produced motherboards, and if it is necessary to connect a printer to a parallel port, adapters for the USB connector are used;
• 4-4-3: The motherboard cannot read data from the math coprocessor. If the error persists after restarting the computer, the motherboard may need to be replaced.

Please note that the above are the most common diagnostic sounds produced by the Phoenix BIOS. In total, the base system software contains more than 100 commands, but the remaining ones are much less common, and they mostly indicate errors in the operation of class “A” lines on the motherboard.

A motherboard with an Award version of the base BIOS system may report various faults with the following signals:

• 1 short signal repeated every second: There are problems with the operation of the power supply. You should clean it from dust and try to turn on the computer again;
• 1 long signal repeated every second:. Remove the memory modules and install them again;
• 1 short signal: Standard diagnostics were performed on the motherboard and no errors were found. After one short beep, the computer should turn on;
• Continuous computer beeping: and does not fulfill its functions. It is possible that it is incorrect;
• 2 short beeps: The diagnostic system has detected problems in data transfer between computer elements. In such cases, the basic BIOS system prompts the user to run CMOS Utility, a program through which you can disable the need to check some computer components. In situations where the computer beeps twice when turned on, it is necessary to check the secure fastening of all cables, especially those that transmit information from the motherboard to the hard drives;
• 3 long beeps: When the motherboard processed information from the keyboard controller, problems occurred. unexpected errors. In such a situation, it is recommended to restart the computer, but if this does not solve the problem, the motherboard will need to be replaced;
• 1 long beep and 1 short beep: RAM is detected by the computer, but data cannot be read from it. It is recommended to check the memory modules for correct connections. If your computer has multiple memory modules installed, leave one and try starting the computer;
• 1 long beep and 2 short beeps: The motherboard is not receiving data from the video card. Probable Cause problems – incorrect installation of the video card or lack of connection of the monitor to the video card port;
• 1 long beep and 3 short beeps: the motherboard cannot detect the keyboard connection, you need to check the reliability of the connection;
• 1 long beep and 9 short beeps: Cannot read information written to read-only memory (ROM). You should try restarting your computer. If the error occurs again, you need to reflash the contents of the storage device, but not all motherboards support software update mode for this component.

Award BIOS beeps are distinguished by their clarity. They can easily be used to diagnose a computer malfunction if you know what they mean.

Diagnosis of computer malfunctions in AMI BIOS is implemented using short and long signals, which makes this basic system reminiscent of Award BIOS.

Short signals:

• 1: the motherboard carried out diagnostics of all components that are connected to it, and the computer began booting. This signal is standard when the system operates error-free;
• 2: There are problems connecting the computer's memory modules. It is necessary to check at what positions the memory is installed, and if several dies are inserted into the computer, it is recommended to insert them one at a time and start the system to determine the faulty module;
• 3: Just like the previous error, this one indicates problems while reading data from RAM. The solution to the problem is identical to the situation with 2 beeps;
• 4: The system timer of the motherboard has gone wrong or failed. You need to remove the battery from the motherboard and wait half an hour until the information is reset to factory settings. Then you can reinstall the battery and turn on the computer;
• 5: The motherboard cannot receive information from the central processor. Check the processor for physical damage. If the problem cannot be determined visually, the processor will need to be replaced;
• 6: No information is received from the keyboard controller. First of all, check that the input device is securely connected to the connector. If there are no problems with this, you need to replace the keyboard or the motherboard itself, depending on which device has failed;
• 7: The motherboard cannot start booting due to an unspecified fault. It needs to be replaced.
• 8: The computer's video card (built-in or discrete) is working with errors. Check the reliability of the connection if we are talking about a discrete video card;
• 9: The information written in the BIOS is not read. In such a situation, the motherboard will need to be re-flashed or replaced;
• 10: The problem is caused by the inability to write information to the computer's CMOS memory. Repair for such an error consists of replacing the CMOS chip, which is most often more expensive than buying a new motherboard;
• 11: software The motherboard cannot read information from the external cache memory.

Combined signals:

• 1 long and 8 short signals: in most cases, the BIOS reports in this way that the data output device, that is, the monitor, is not connected. It is recommended to check the reliability of the connection;
• 1 long and 3 short beeps (2 short beeps): The computer's video card is faulty or not connected correctly. You need to make sure that it is securely installed in the required slot and that all the necessary wires are connected to it.

If the computer beeps when turned on and does not boot, you need to determine the nature of the sound, and then begin troubleshooting. Most often the problem is a poor connection of components or a malfunction of the motherboard itself.

Hello everyone, computer problems occur frequently. And every user at least once in his life has encountered problems with both software and computer hardware problems - some nodes begin to work incorrectly or stop working altogether. And a seemingly properly working computer does not start at the most necessary moment. I previously wrote in when the computer does not start and beeps - by the peaks you can determine what kind of breakdown has occurred. But what to do if the computer does not start and does not beep? This indicates more serious reasons - when the self-diagnosis system included in the BIOS cannot test the main components of the system. In other words, the computer cannot even start and start working. This problem should be divided into three possible causes (errors). First of all, in order to determine what kind of problem is with the computer, you need to open the cover of the system unit to make sure whether there is a system speaker (speaker) at all and whether it is connected to the motherboard, then carefully inspect all the components for foreign debris that could cause a failure (by closing represent tracks on the board). If everything is fine then follow the steps:

1. The computer does not start and does not beep - carefully inspect the system unit. If you don’t find anything, you need to position the system unit in such a way that you can press the POWER button and at the same time look inside the system unit at the fans installed in it - they will help us identify a possible error. When you press the POWER button, the fans in the system unit begin to rotate, on the motherboard (if there are any, the LEDs and indicators light up) - such operation of the computer indicates possible oxidation of the contacts on the video card or RAM. You can remove them with caution and always with the power cord unplugged. After removing, start the computer again - peaks of the system speaker appeared - that’s good - clean the contacts of the memory and video card and put them back in place.

2. If the memory and video card are removed, and there are no peaks in the system speaker, we have only three blocks left - the processor, the motherboard and the power supply. We follow the path of least resistance - we start the computer for about 5 minutes while the fan on the power supply and on the processor rotate, turn it off and disconnect it from the 220V power supply. Then we carefully check with our hands the temperature of the processor heatsink and the south bridge on the motherboard - see an approximate photo of the motherboard with indications of what is where.

We checked - if the heatsink on the processor is cold, this indicates that the processor is not working (it heats up during operation), perhaps it was the cause of the breakdown; to definitely check the processor, you will need a replacement processor that matches the model of the motherboard. We check the south bridge on the motherboard - if after five minutes the heatsink is warm or cold, we can assume that the motherboard is operational, but if after 5 minutes of operation the south bridge is so hot that touching your finger can be held for no more than 2-3 seconds due to high temperature - this indicates a failure of the south bridge microcircuit. Either a replacement will be required - re-soldering to a similar working one or a replacement of the motherboard.

3. When you press the POWER button, the fans turn half a turn and stop - nothing else happens. Indicators and LEDs on the motherboard light up. When the power is turned off, you need to check whether the fan on the processor cooler rotates easily - perhaps it is jammed, there is not enough proper cooling and the system goes into trouble. safe mode or doesn't start at all. If it rotates easily, but after starting the computer it stops rotating, this may indicate that the voltage supplied to the main components of the motherboard does not meet the requirements for the board’s performance. Accordingly, we conclude that the power supply responsible for supplying the correct voltage has started to work incorrectly - to verify our assumptions, we need to find a power supply that is suitable for the power and connectors, connect and start the computer - if it starts successfully, the reason is clear - the power supply is either repaired or replace with a new one. There are cases when when you press the POWER button, nothing happens, the fans don’t spin, and the LEDs on the motherboard don’t light up. This may also indicate a failure of the power supply or a lack of reliable contact between the power supply and the motherboard or other components of the computer. It is enough to forget to connect a separate 12/24 volt processor power supply, or not to supply additional voltage to the video card - and Malevich will appear on the computer screen after assembly. I would like to note that when disassembling, as well as when assembling a computer, you need to be extremely careful and attentive - because... All work involves electricity and expensive computer components.

All the best, good luck and good luck to everyone!!!

Each of us, when turning on the computer, heard the characteristic squeak that it makes at the very beginning of loading. As a rule, we all hear only a single signal. Why? It means that everything is fine with the PC.

This phenomenon is called BIOS POST signals, they are designed to notify the user about what is happening with the computer. Therefore, if something goes wrong, you will hear not one, but several characteristic squeaks emitted by the built-in speaker of the system unit.

It turns out that each combination of such “squeaks” has its own meaning and directly indicates what is wrong with your equipment. Therefore, if you are faced with the fact that your computer beeps when you turn it on, and does not do it the way it always does, do not panic.

BIOS uses POST signals to inform the user about the state of the personal computer

The information below will help you understand what happened and what part needs to be checked to restore the device to working order.

The way your computer beeps directly depends on which company you have the BIOS system. If you don't know the manufacturer's name, this information is available on the first screen when you turn it on - usually it's AMI, Award, or Phoenix. In extreme cases, the name can be seen by directly going to the BIOS menu itself.

So, if you know which manufacturer your BIOS is from, let's move on to deciphering the sounds emitted by the component and find out how many times it beeps in a given situation.

What do the sounds mean if I have an AMI BIOS?

When your PC turns on, you may hear the following sounds:

Short:

• 1 - everything is normal.
• 2 - you did not turn off the printer/scanner or a RAM parity error occurred.
• 3 - error in the first 64 KB of RAM.
• 4 - You need to set the time in the BIOS or the Windows system itself.
• 5 - processor problems.
• 6 - problems with the input tool.
• 7 - problems with the mother card.
• 8 - problems in the memory of the video adapter.
• 9 - BIOS checksum is incorrect.
• 10 - problems with writing to CMOS
• 11 - the cache located on the system board contains errors.

Combinations of long and short sounds:

• 1 long, 1 short - problems with the power supply.
• 1/2 - Mono-CGA video adapter error.
• 1/3 - problem with the EGA-VGA video card.
• 1/4 - no video card.
• 1/8 - video card or display is not connected.

Other meanings:

1. When you hear three long beeps, the RAM text was completed incorrectly. It needs to be reinstalled, if it doesn’t help, replace it.
2. The computer beeps with short beeps and does not turn on, does this situation continue continuously? Check the power supply - it is not working or the PC is overheated. Although, often one reason is directly related to another, so most likely you will have to replace this part in order to avoid equipment breakdown.
3. If the system unit is silent, the screen does not light up, it means that the processor has broken down or, at best, its contact pin has come off - check it first, and then run to buy a new component, because it costs a lot.

Decoding POST combinations of the Phoenix system

During switching on, this manufacturer produces sounds several times in a combination of three signals, with pauses between them. Therefore, we will provide the transcript in this form - for example, 1.1.2 means one signal, pause, another one, pause, two signals.

Also, endless long sounds make it clear that the mother card is broken, and when loud and quiet POST signals alternate in a similar way to a siren, this indicates a failure of the video card. In a situation where the computer beeps constantly, you should check the CPU cooler - it is missing or it is broken.

Sound meanings in Award BIOS

There won't be much transcript here. The main BIOS POST signals that can be heard in a system from this manufacturer are the following:

• 2 short “squeaks” are not scary, because they mean minor problems. As a rule, after them you will be asked to use the CMOS Setup Utility application to eliminate all troubles. We also advise you to check whether the hard drive is securely attached to the motherboard.
• Long beeps that sound three times indicate problems with the input tool.
• Combinations:
• A long and short sound indicates a RAM error.
• A long and two short beeps indicate a problem in the video card, and another short beep is added - in the video memory.
• If a long signal is heard, followed by nine short signals, there is a problem in reading data from the ROM.
• Repeated short beeps indicate incorrect operation of the power supply or RAM.
• Repeated long sounds when turned on indicate problems with RAM.
• If the frequencies change from high to low notes, there is a problem with the processor.
• A continuous beeping indicates a problem with the power supply.

So we learned how to decipher BIOS sound signals. Use this data to always be able to understand what is going on with your computer and what part needs to be checked, repaired, or even replaced. As you can see, the technology is smart enough to independently give you a signal about which component is out of order, and such tips will definitely be useful for quickly solving the problem.

Every time the computer boots, the system unit makes a beeping sound. Not everyone knows that this is a signal indicating the performance of the system unit. And only a few know how to decipher these signals from the system unit.

That's what we'll talk about. If you are reading this material, I recommend printing it out now. When you need decryption, you won’t be able to get online. :)

So what is the “system specialist” squeaking about? These signals are the result of testing the computer hardware (cooler, RAM, video card, etc.). Every time you boot your computer, it tests the hardware and reports the results with this particular squeak. The transcript of the system unit squeaks is below.

* One short squeak.
Explanation:
Everything is fine. The test was completed successfully. You can continue to work. It happens that some system units do not beep at all at this moment.
* There is not a squeak or image on the computer screen.
Explanation:
Malfunction in the power supply or processor.
Correction:
First, check to see if the power cord is plugged into the outlet. If everything is in order, try connecting a known working device to the surge protector (such a cord with a box in which there are many sockets, there is also a switch button, usually red). A phone charger will do, of course, with a phone connected to it. You need to check all the surge protector sockets. If the socket is working, the phone will charge. Next, we check whether the power supply starts when you press the computer start button. In this case, the cooler (fan) of the power supply should at least twitch. If there is movement - look for a new processor, otherwise - new block nutrition. You also need to check the power cable of the motherboard. It may happen that he moved away.
* One long continuous squeak.
Explanation:
The power supply is faulty.
Correction:
Purchasing a new power supply.
* Two short squeaks.
Explanation:
Minor problems with BIOS settings.
Correction:
Go to the BIOS and set the optimal parameters. Exiting to the BIOS is usually done using the key. If you don't know what to change, then set the default values. To do this, press the button. To exit with saving - , . Some BIOS versions themselves highlight conflicting settings items by highlighting them. You can also reset the BIOS settings by removing the motherboard battery for a few seconds.
* Three long squeaks.
Explanation:
The keyboard is missing.
Correction:
Plug the keyboard into the PS/2 socket. If this does not help, you will have to change the keyboard.
* Three short squeaks.
Explanation:
RAM error.
Correction:
To do this, you need to check whether there are memory sticks on the motherboard. Don't laugh, it happens. Then you need to remove all the memory sticks, carefully sweep away the accumulated dust, and one by one stick the memory stick in and start the system unit. If the “system unit” beeps on some strip, this may mean that the strip is faulty.
* One long and one short squeak.
Explanation:
RAM is not working properly.
Correction:
Perhaps one or more memory sticks are conflicting with each other. You need to insert one memory stick at a time and try to start the computer.
* One long and two short squeaks.
Explanation:
The video adapter is not working properly.
Correction:
Correct settings in BIOS.
* One long and three short squeaks.
Explanation:
The video adapter does not work.
Correction:
Check the performance of the video card. To do this, you need another, known working video card. You can also try removing the card, removing dust from the slot, and sticking the card back in place. And don’t forget to check if the card has additional plugs for power. Power to such video cards must be supplied with a separate cord to which no device is connected. I also suggest checking whether the monitor is connected and working. Try to blow out the connector connecting the monitor to the computer.
* One long and eight short squeaks.
Explanation:
The video adapter is not working or the monitor is not connected.
Correction:
Same as written above.
* One long and nine short squeaks.
Explanation:
Error reading BIOS data.
Correction:
Try resetting the BIOS settings by removing the battery. If this does not help, then flash the BIOS. But this is another story, requiring a separate article. I'll try to write it soon.
* Four short squeaks.
Explanation:
The system timer does not work.
Correction:
You can try resetting the BIOS. But, unfortunately, it rarely helps. There is only one way out - replace or repair the motherboard.
* Five short squeaks.
Explanation:
The processor is not working properly.
Correction:
Try to clean the dust from the processor slot, make sure the heatsink is clean and the processor temperature is low.
* Six short squeaks.
Explanation:
The keyboard is faulty.
* Seven short squeaks.
Explanation:
Motherboard malfunctions.
Correction:
Have the motherboard repaired or purchase a new one.
* Eight short squeaks.
Explanation:
Problems with video memory.
Correction:
Take the video adapter for repair, or purchase a new one.
* Nine short squeaks.
Explanation:
Incorrect BIOS checksum.
Correction:
Usually it is suggested to reset the BIOS settings and allows you to continue working. If something happens, you can reset the BIOS by removing the battery.
* Ten short squeaks.
Explanation:
Error writing data to CMOS chip.
Correction:
This error may occur when flashing the BIOS. Therefore, we will describe this part in another article.
* Eleven short squeaks.
Explanation:
The cache memory is not working properly.
Correction:
Reset BIOS. If this does not help, we take the computer in for repair or install a new processor.
* Repeated long squeaks.
Explanation:
The RAM is faulty or incorrectly connected.
Correction:
Reconnecting memory sticks. Calculating the faulty one by connecting one by one and starting the computer. Cleaning from dust.
* Repeated short squeaks.
Explanation:
The power supply is not working properly.
Correction:
Checking the functionality of the power supply, checking the cords for breaks, checking the surge protector, and, last but not least, replacing the power supply.

That's all. If you have any questions, ask.

PS: To reset the BIOS, instead of removing the battery, you can use a special jumper. Its location can be found in the documentation for the motherboard.

Addition: BIOS signal encodings if the computer died.
AWARD BIOS Signals

Continuous signal. The power supply is faulty.

2 short. Minor errors found.
3 long. Keyboard controller error.
1 long + 1 short. Problems with RAM.
1 long + 2 short. Problem with the video card.
1 long + 3 short. An error occurred while initializing the keyboard.
1 long + 9 short. An error occurred while reading data from the read-only memory chip.
1 long repeating. Memory modules are installed incorrectly.
1 short repeating. Problems with the power supply.

AMI BIOS signals
There are no signals. The power supply is faulty or not connected to the motherboard.
1 short. No errors found.
2 short. RAM parity error.
3 short. An error occurred during the operation of the first 64 KB of main memory.
4 short. The system timer is faulty.
5 short. The central processor is faulty.
6 short. The keyboard controller is faulty.
7 short. The motherboard is faulty.
8 short. Video memory is faulty.
9 short. BIOS chip contents checksum error.
10 short. Cannot write to CMOS memory.
11 short. The external cache memory (installed in the slots on the motherboard) is faulty.
1 long + 2 short. The video card is faulty.
1 long + 3 short. The video card is faulty.
1 long + 8 short. Problems with the video card or the monitor is not connected.

PHOENIX BIOS signals
1-1-3. CMOS data write/read error.
1-1-4. BIOS chip contents checksum error.
1-2-1. The motherboard is faulty.
1-2-2. DMA controller initialization error.
1-2-3. Error when trying to read/write to one of the DMA channels.
1-3-1. RAM regeneration error.
1-3-3. Error when testing the first 64 KB of RAM.
1-3-4. Error when testing the first 64 KB of RAM.
1-4-1. The motherboard is faulty.
1-4-2. RAM testing error.
1-4-3. System timer error.
1-4-4. Error accessing I/O port.
3-1-1. Error initializing the second DMA channel.
3-1-2. Error initializing the first DMA channel.
3-1-4. The motherboard is faulty.
3-2-4. Keyboard controller error.
3-3-4. Video memory testing error.
4-2-1. System timer error.
4-2-3. Line error A20. The keyboard controller is faulty.
4-2-4. Error when working in protected mode. The CPU may be faulty.
4-3-1. Error when testing RAM.
4-3-4. Real time clock error.
4-4-1. Serial port test failed. The error may be caused by a device using this port.
4-4-2. Error while testing parallel port. The error may be caused by a device using this port.
4-4-3. Error when testing the math coprocessor.