Any technique, even the most advanced, can malfunction. Modern computers are equipped with devices that can inform about problems through special sound signals, as well as indicate the location of the breakdown. It is important to correctly evaluate the sound code, as it differs depending on the BIOS version and device manufacturer.
The sound that can be heard during various problems with a personal computer or laptop comes from a small speaker located in the power supply case. The presence of uncharacteristic audio signals always indicates failures at the technical or software levels.
Normally, we hear only one short sound, which indicates complete technical serviceability and successful startup of the system. The most common reasons include:
- Dusty parts. As a result, the normal functioning of certain areas is disrupted due to changes in signal transmission or ineffectiveness of the cooling system. Causes up to 80-90% of all malfunctions, 70% of which occur in RAM modules. After removing excess dust particles, the computer returns to normal life.
- Need to replace thermal paste. Normally, the radiator should remove heat from the processor, but both elements do not have perfectly smooth surfaces. The problem is solved by adding a special mixture to this space. Over time, the structure of the paste begins to harden and thermal conductivity decreases. The processor may instantly overheat when the system starts and shut down. The recommended frequency of changing the heat-conducting mixture is once every 6 months.
- Faulty parts. The most common problems are the video card, RAM and motherboard. Ascertaining the failure of the latter is possible only with full confidence in the serviceability of other parts of the computer. In this option, it is important to “collect anamnesis”: whether the modules were replaced in Lately, whether there were episodes of unreasonably freezing or shutting down, etc.
- Problems with the power supply. This is a typical situation for old computers (5-7 years or more), when it is not possible to provide adequate power to the video card or processor.
There are several simple ways to diagnose damage:
Procedure to identify the cause
Diagnosis does not present significant difficulties. The following steps must be taken:
- Find out the BIOS version.
- Compare the frequency and duration of the signals with the corresponding tables.
- Determine the type of technical or software failure.
- Try to solve the problem yourself. If unsuccessful, you should contact a specialist.
Types of BIOS
BIOS is a set of programs that are necessary for the operation and interaction of PC hardware and all connected peripheral devices.
To find out the version, you can:
How to enter BIOS
Typically you need to press one or two keys at the same time. The basic combinations from hardware software manufacturers are as follows.
List table possible options BIOS login for different versions.
The order in which the BIOS starts may vary between different manufacturers. personal computers and laptops. For clarity, the data is presented in table form.
A table with a list of possible options for entering the BIOS on devices from different manufacturers.
| Company | Keys | Image |
|---|---|---|
| Acer | "F1" or "F2" |  |
| AST | "Ctr+Alt+Esc" or "Ctr+Alt+Del" ("Delete") |  |
| "F1" or "F3" |  |
|
| "F2" |  |
|
| "Fn+F1" or "F2" |  |
|
| HP | "F1", "F2" |  |
| "Ecs", "F1" |  |
|
| Sony | "F2", "F3" |  |
| Tiget | "Delete" |  |
| "F1" or "F2" or "Delete" |  |
|
| "F10" |  |
How to recognizeBIOS by appearance
If you can launch the firmware collection, you can distinguish different kinds by design and character of text display. Below are illustrations of the most common versions:
Decoding computer signals
Once determined software, you need to start decoding the messages. To do this, you should listen carefully - the signals can have different durations and quickly replace each other. These features will indicate the location of the breakdown.
Award BIOS
| Length and order of signal changes | Interpretation of the failure and possible reasons elimination |
|---|---|
| 1 short | Testing of all systems has been successfully completed, the operating system has started to launch |
| Brief – 2 pcs. | You should check the connection density of all devices (loops) and reset the BIOS settings |
| Long lasting – 3 pcs. | |
| 1 short and 1 long | RAM error. It is necessary to check the tightness of the contacts and clean them from dust particles. Most likely the element needs to be replaced |
| Failure to receive information from the video card or its absence. You should disconnect the contacts, wipe them from dust or replace the video card | |
| Video memory acquisition failed. You should disconnect the contacts, wipe them from dust or replace the video card | |
| 1 long and 9 short | Reading the persistent replacement device failed. Need to replace ROM or motherboard module |
| Brief, repetitive | Incorrect operation of the power supply. Requires dust cleaning and contact treatment. You can try replacing the power supply unit or RAM |
| Long-lasting, constantly recurring | RAM playback failed. Needs dust cleaning |
| Continuous repeating signal with constant frequency changes (low-high) | Defect in the processor or its absence |
| Continuous monotonous | Power supply failure. Solution: cleaning from dust or replacing the element |
Phoenix BIOS
Reference! In the table sound codes are displayed in the format “one, two, three”, where the numerals indicate the number of consecutive sounds, and the comma indicates a pause.
| Sound code | Interpretation of the results and solution to the problem |
|---|---|
| One, one, two | The processor is faulty or incompatible with motherboard. Module replacement required |
| One, one, three | CMOS data playback or recording error occurred. Need to replace BIOS battery or motherboard |
| One, one, four | BIOS startup checksum calculation failed. Need to replace the battery or motherboard module |
| One, two, one | Main board startup error. You need to restart the PC, disconnect any expansion cards, reset BIOS to factory settings. Using switches located on the main unit, you need to update the CMOS or, if possible, perform these actions through the BIOS |
| One, two, two or one, two, three | DMA controller failure. Requires rebooting the device and turning off the add-on cards. Most likely you need a new motherboard |
| One, three, one | RAM playback error. Requires installation of a new RAM drive or motherboard unit |
| One, three, three or one, three, four | Problem with recording and playback of the initial 64 KB of device RAM. You need to check the correct installation of the operating unit modules, clean the contacts or replace the RAM completely |
| One, four, one | Main board startup failed. You should reboot the PC, reset the BIOS and clear the CMOS using the motherboard toggle switch. All other modules must be disconnected from the motherboard |
| One, four, two | |
| One, four, three | |
| One, four, four | There was an error in recording or playback of any input or output port. It is necessary to disconnect from the power supply and disconnect all peripheral devices from the system unit (monitor, printer, mouse, etc.) |
| Three, one, one | DMA channel #2 failed to start. You should turn off the PC and any existing expansion cards. You may need a new motherboard |
| Three, one, two or three, one, four | DMA channel #1 failed to start. You should turn off the PC and any existing expansion cards. You may need a new motherboard |
| Three, two, four | Error in the device that controls the keyboard. The input device needs to be reconnected or replaced |
| Three, three, four | Video card playback failure. You need to reconnect the video adapter cable or connect a new one instead of the obviously faulty one. With an integrated adapter, the RAM module is checked: it needs to be removed and the contacts wiped, or a new one connected |
| Four, two, one | Error starting system timer. It is recommended to disconnect the PC from power and reset the CMOS using the toggle switch on motherboard |
| Four, two, two | Testing of all systems and peripheral devices has been successfully completed. Everything is fine |
| Four, two, three | The problem is with the device that controls the keyboard. You need to reconnect this technical device or connect a new one. The motherboard may have failed |
| Four, two, four | Fatal failure when transforming the processor into protected mode. You need to restart CMOS using the lever on the motherboard or replace the processor with a new one |
| Four, three, one | Problem starting RAM. You need to check that the blocks are installed correctly in the connectors |
| Four, four, two | The parallel port failed to start. It is recommended to turn off the power to the PC and use the motherboard levers to return the CMOS to the zero position. If these steps do not help, then you need to take an additional board with the required port |
| Four, four, three | The math processor failed to start. Turn off your PC. If the error persists - critical damage to the main processor |
Video - Computer breakdown. BIOS signals
AMI BIOS
| Type of audio information | Decoding and ways out of the situation |
|---|---|
| 1 short | System test completed successfully |
| Brief – 2 pcs. | Error in monitoring the correct operation of RAM. Turn off the PC, check that the RAM modules are installed correctly by disconnecting and connecting the ports. Disable the "ECC" option in the BIOS menu |
| Brief – 3 pcs. | Failure to play the initial 64 KB of device RAM. You need to check that the RAM modules are installed correctly, clean the contacts or replace the RAM module completely |
| Brief – 4 pcs. | Error starting system timer. You should disconnect the computer from the network and reset the CMOS on the motherboard using a special toggle switch. The motherboard unit may need to be replaced |
| Brief – 5 pcs. | The main processor failed to start. You need to disconnect the computer from the power supply, reset the CMOS using the levers on the motherboard, or replace the processor with a new one |
| Brief – 6 pcs. | The problem is with the device that controls the keyboard. It is necessary to reconnect this technical device or connect a new one. The motherboard may have failed |
| Brief – 7 pcs. | Base unit startup failed. The electronic computing device should be rebooted and returned to factory settings. BIOS settings and clear the CMOS using the motherboard levers. All unnecessary modules must be disconnected from the motherboard |
| Brief – 8 pcs. | The video card failed to start. You need to check the connection of the video card by reconnecting it to the slot. If the module is integrated, you need to check the RAM block |
| Brief – 9 pcs. | The BIOS battery needs to be replaced because there is a problem with the checksum calculation |
| Short – 10 pcs. | The BIOS battery needs to be replaced because there is an error in writing or playing back CMOS data. |
| Brief – 11 pcs. | Data cache startup failed. The cache memory is available in slots designed to complement the motherboard unit. You need to disconnect the PC from the network and insert the elements into place. If necessary, faulty modules are replaced |
| 1 long and 1 short | Power supply failure. Needs dust cleaning or replacement |
| 1 long and 2 short | Failed to receive data from the video card. Requires cleaning of dust and reconnection of cables. If necessary, replace the module |
| 1 long and 3 short | Video adapter failure. Requires cleaning of dust and reconnection of cables. If necessary, replace the module |
| 1 long and 4 short | No video card. You need to pull it out and reinsert it, after making sure that this block is present |
| 1 long and 8 short | Lack of monitor connection or video card malfunction. It is necessary to check the serviceability of the connection of the above devices |
| Long lasting – 3 pcs. | Testing reading or writing RAM ended with errors. RAM is not installed or connected incorrectly. You need to check that the module is connected correctly |
| Monotonous continuous sound | Functional error of the power supply or PC overheating. Needs dust removal or thermal paste replacement |
Compaq BIOS
| Sound code | Interpretation of results and options for solving the problem |
|---|---|
| Brief – 1 pc. | The system started successfully. Testing found no errors |
| Brief – 2 pcs. | Any system error. Full check required |
| 1 long and 2 short | Video card reading failure. Requires cleaning of dust and reconnection of cables. If necessary, replace the module |
| Brief – 7 pcs. | Video card reading failure (AGP). Requires cleaning of dust and reconnection of cables. If necessary, replace the module |
| 1 monotonous sound | RAM playback or writing error. There is no RAM or it is connected incorrectly. You should check that the module is connected correctly |
| 1 short and 2 long | Failure to receive data from RAM. You need to make sure that the blocks are installed in the appropriate ports, or replace the entire module |
Video - The computer beeps when turned on. What is this?
Troubleshooting in other ways
If you have problems starting your computer, deciphering beeps, or reading the LEDs on the panel, you can resort to simple ways elimination:
Features of PC dust removal
There are 2 main options for removing dust from the system unit case:
- fast (without filming and detailed processing of modules);
- painstaking (every element is cleaned and thermal paste is replaced).
To work you will need a Phillips and straight screwdriver, ethanol, a brush or cleaning brush and a vacuum cleaner.
On a note! To process large parts, you can use a paint brush; for small parts, you can use a stationery brush.
At each stage, it is recommended to take photographs so that later you can easily install all devices in the same positions. The location of the blocks differs among different manufacturers and models of devices, and therefore significant difficulties may arise.
Disassembling the system unit
The PC is disconnected from the power supply and all peripheral devices are disconnected. In 99% of cases the lid is located on the side. The procedure is as follows:
Important! When performing a quick cleaning, it is enough to remove all visible dust. If it is deep, remove individual elements, the main one of which is the cooling system (radiator and coolers).
How to remove the cooler
How to remove a radiator
There are 2 options for mounting the radiator - screw or lock.
If the paste in the gap between the processor and the cooling element has dried out, then due to hardening the processor may also come off. In this case, you need to pry off the line of contact with a ruler or strip and separate the parts.
Removing the processor
The processor is secured with a plastic retainer. The latches on the socket are released and the main element of the computer is removed without much effort. There are legs on the back of the block; they must not be damaged under any circumstances.
Cleaning scheme
Step 1. Use a dry brush and vacuum cleaner to remove all visible dust. When connecting the hose to the corner parts of the housing, you need to carefully remove dust particles with a brush. When working, you need to be careful with all protruding elements so as not to damage them.
Important! Under no circumstances should you use a damp sponge or cloth. Such changes disable working elements. When you turn on a computer that is not dry enough, a short circuit or slowdown in signal transmission may occur due to oxidation of the contacts.
Step 2. Then remove the remaining thermal paste from the processor using a paper napkin soaked in an alcohol solution. If the paste is significantly hardened, acetone can be used. In the same way, traces of thermal paste are removed from the radiator.
Step 3. The fan is blown through with air and wiped with a cloth soaked in an alcohol solution. You should be careful when working with the blades of the device, as they have the least strength.
Replacing thermal paste
Step 1. Parts of the processor that were covered with thermal paste are re-coated with it. The mass is applied evenly, the layer thickness should not exceed 0.5 mm.
Step 2. The paste is spread evenly with a swab or a payment card. It is very important to lubricate the entire outer area of the processor that touches the heatsink. Excess from the edges is removed with cotton balls or paper napkins.
Reassembly
Step 1. The processor is installed in such a way that the gold fixing corner coincides with the same one in the connector. Then the radiator is placed under special hooks or clamps and pressed with a handle. It should fit well and not be loose.
Step 2. The coolers are screwed into their original positions. A check is in progress. Blades at correct installation do not make otherworldly sounds. The last step is attaching the cover of the system unit case.
Conclusion
Thus, you can easily find out the cause of the breakdown by deciphering the sound signals emitted by the computer. However, the help of a specialist may not be required, since there are options for fixing problems on your own, the main thing is to handle all elements carefully so as not to damage them.
Video - The computer beeps and does not turn on
Every computer owner has noticed that during boot it produces a beep unless you have this operation disabled. However, not everyone thought about what this signal meant. In fact, the squeak is made for a reason. Before this signal, all components are tested for functionality. If no failures were detected, a signal is given that indicates that everything is in order - one short one. However, if there is any problem, the computer will notify the user about the cause of the error using sound signals. To decrypt, many use the instructions that come with the motherboard. However, not everyone has it; some lost it, others bought a computer second-hand without it.
Why is the computer beeping?
First of all, it’s worth explaining why the computer beeps when turned on. Performance analysis is carried out by the BIOS - this is a certain set of microprograms recorded in a non-volatile memory chip located on the motherboard, which also checks the correct operation of all components of the system unit, testing them. The self-test program is called POST - Power-On Self-Test, after its completion, if POST is successfully completed, the built-in system speaker emits one short beep, but in the event of any failure, various sequences of beeps are heard that allow you to determine the cause of the malfunction. All signals come from the speaker, which is located in the system unit itself, also called PC speaker or Beeper.
There is a table of values by which you can understand what exactly these signals mean. Below is an example of such a table.
The computer can make various sounds, long, short, several short or several long in a row, possibly alternating them with pauses. It is worth considering that there are different types of BIOS and, depending on the manufacturer and version of the BIOS, sound signals in pitch, duration and various combinations may have some differences. Experienced users use these sounds to understand why the operating system does not boot. BIOS version depends on the motherboard, so the interface may be different.
When you turn on the computer at the very beginning, while the screen does not show anything, all equipment that was connected to the computer is checked. In a situation where absolutely everything is working properly and connected to the motherboard correctly, the operating system starts loading. If the computer cannot boot Windows or any other system, then there is a problem with the connection or the serviceability of some equipment.
Based on the signals, you can determine the source of the problem. After this, try reconnecting this equipment (disconnecting and reconnecting). If this does not help, try replacing the damaged hardware and downloading again operating system.
Once the cause of the problem has been determined, the user can almost always fix it on his own. Disconnect your device from the electricity, and then proceed depending on the cause of the problem.
Action plan when your computer beeps
What should be the action plan in a situation where the computer does not load the operating system and beeps abnormally?
- You should restart the computer and count the number of squeaks that the speaker in the system unit makes. It is also worth paying attention to the length of the squeaks.
- You should find out your BIOS version during boot. In most cases, it is displayed at the very top of the BIOS settings window.
- According to the table for your BIOS version, find the designations of these signals. I will give an example table below.
- After that, all that remains is to try to reconnect the equipment. If this does not give the desired effect, the part should be replaced. If after the completed actions the operating system boots, then all that remains is to purchase the necessary equipment.
POST Card
POST cards are also used to diagnose computer faults. Currently, there are a lot of such cards, for various possible situations. They allow you to display the POST code and understand the cause of the problem based on this code.
Determine the problem without visiting the BIOS
It would be most advisable to carry out the above methods for troubleshooting computer problems with the help of a competent person. However, any user can try to solve the problem on their own. If the operating system does not boot, this does not always indicate that the hardware has failed. It is possible that the user accidentally touched the wire and it came loose. As a result, the equipment does not work and the computer refuses to load the operating system. Therefore, before calling the wizard, you must do the following:
- Check how your devices are connected. Many people get scared by strange sound signals and immediately call a professional. However, the problem may be that the wire from the keyboard has moved slightly, in which case the computer will produce three long beeps in most types of BIOS. No need to spend extra cash with such a problem.
- You need to disconnect the computer from the network, then check all the connectors on the motherboard. Pay special attention to the slot for the video card and RAM.
- Dust can also be a problem causing errors. Therefore, it is necessary to carefully clean the motherboard and other internal equipment from dust. This procedure should be carried out at least once a week, this will extend the operating time of your equipment. The motherboard should be cleaned using a jet of air or a dry cotton swab.
- Examine your motherboard for signs of burning. If you smell a characteristic odor, you should pay special attention to this point.
- Try reconnecting the equipment again; in some cases, after this your operating system will be able to boot. If there is too much dust, the equipment may fail. After reconnection, it can start functioning again.
Table of sound signals for AMI BIOS
| 1 long |
the test passed without errors. |
| 1 long 2 short |
violations in the operation of video art. There are two possible reasons: |
| 1 long 3 short |
a) digital-to-analog converter error, |
| 1 short |
DRAM refresh failure memory regeneration circuit error. Check that the memory chips are installed correctly and replace if necessary |
| 2 short |
Parity Circuit Failure memory parity circuit error. The error was found when checking the first 64K of main memory. Check that the memory chips are installed correctly and replace if necessary. |
| 3 short |
Base 64K RAM failure failure of the first 64K of main memory. Check that the memory chips are installed correctly and replace if necessary. |
| 4 short |
System Timer Failure The system timer is faulty. Check the corresponding modules on the motherboard (with possible replacement). Otherwise, the motherboard needs to be replaced. |
| 5 short |
Processor Failure The processor is malfunctioning. It is possible to reinstall the processor to improve contact, as well as check the correct installation of jumpers for of this type processor. |
| 6 short |
Keyboard Controller 8042/Gate A20 error Error in address line A20 of the keyboard controller. The keyboard controller (8042) contains a switch that allows the processor to operate in virtual mode. This message means that the BIOS is unable to switch the processor into protected mode. You must first check the keyboard and connecting cable. You must also refer to the "BIOS SETUP" - "Fast Gate A20" option and experiment with it. The keyboard controller chip needs to be reinstalled or replaced. Otherwise, the motherboard will need to be replaced. |
| 7 short |
Virtual Mode Exception Error virtual mode exception error. Most likely, the performance of the processor is impaired (in this case, the processor generates a special interrupt), and possibly the chipset. |
| 8 short |
Display Memory Read/Write Test Failure display memory read/write test error. The processor cannot access the graphics card's mapped video memory. Check the installation of the board in the connector, reinstall the memory on it. Otherwise, you will need to replace the video card. |
| 9 short |
ROM BIOS Checksum Failure BIOS chip checksum error. You must try to reinstall this chip. Otherwise, you need to reflash it or replace the chip. |
| 10 short |
CMOS Shutdown Register Read/Write Error An error was detected when accessing CMOS memory. Call "BIOS SETUP" if possible and save the data again. Since in most cases this chip is soldered, the motherboard will need to be replaced. |
| 11 short |
Cache Error/External Cache Bad The external cache memory is faulty. Check that the memory modules are seated correctly. If they are soldered, then replacing the motherboard is also possible. |
Table of sound signals for AWARD BIOS
In custody
A fairly large number of users have encountered this problem. With help the method described above In some situations, checking equipment without a BIOS can save you money by calling a technician. However, if you have completed all of the above operations and the computer still does not turn on, you should not try to restore the functionality of the parts yourself. It is better to trust a qualified specialist.
In some cases, a malfunction may appear after contact with the equipment. For example, when replacing the BIOS battery. In this case, you need to go to the main BIOS menu, check whether the time matches the real one, and also check that the BIOS sees all the equipment. The reason may be in the RAM slots. In this case, you need to try to connect one strip in turn to all slots until loading is successful, perhaps the problem is in the strip itself, so you can try to do this operation using another strip.
Malicious power engineers turned off the lights, and when turned on, the computer began to beep briefly and refused to work? Did your brother kick the system unit, after which the latter emits one long howl and does not turn on? Is your computer beeping so loudly that everyone in the area is scared?
You can, of course, drop a brick on the energy workers and hang your brother by his feet from the ceiling, but how can you determine what happened to the computer and what does this very squeaking mean? This article is specifically devoted to the sound signals (or lack thereof) of the computer, namely their decoding.
Signals of various BIOS types
The signals differ depending on the type of BIOS that resides in your motherboard. You can find out by going into the BIOS itself (the DEL button at the earliest stage of booting the computer).
— Continuous signal — The power supply is faulty. Needs replacement.
— 1 short signal – No errors detected. Typical behavior of a working computer - the computer boots normally.
— 2 short beeps – Minor errors detected. A prompt appears on the monitor screen to enter the CMOS Setup Utility program to correct the situation. Check the reliability of the cables in the connectors hard drive and motherboard.
— 3 long beeps — Keyboard controller error. Restart your computer. The motherboard may need to be replaced.
– 1 long + 1 short beeps – Problems detected with RAM. Check that the memory modules are installed correctly. Or replace with other memory modules.
- 1 long + 2 short beeps - Problem with the video card - the most common malfunction. It is recommended to remove the board and reinsert it. Also check the connection to the monitor's video card.
— 1 long + 3 short beeps — Keyboard initialization error. Check the connection between the keyboard and the connector on the motherboard.
— 1 long + 9 short signals — Error when reading data from the permanent memory chip. Reboot the computer or reflash the contents of the chip (if this mode is supported).
- 1 long repeating signal - Incorrect installation of memory modules. Try pulling them out and putting them in again.
- 1 short repeating signal - Problems with the power supply. Try to remove any dust that has accumulated in it.
AMI BIOS
1 short beep – No errors detected. The computer is ready to use.
— 2 short beeps — RAM parity error. Restart your computer. Check the installation of memory modules. Memory modules may need to be replaced.
— 3 short signals — Error during operation of the main memory (first 64 KB). Restart your computer. Check the installation of memory modules in the slots. Memory modules may need to be replaced.
— 4 short beeps — The system timer is faulty. The motherboard may need to be replaced.
- 5 short beeps - Faulty CPU. The processor may need to be replaced.
— 6 short beeps — The keyboard controller is faulty. Check the quality of the connection between the latter and the connector on the motherboard. Try replacing the keyboard. If this does not help, then the motherboard may need to be replaced.
— 7 short beeps — The motherboard is faulty.
— 8 short beeps — Problems with the video card.
— 9 short beeps — Checksum error on the contents of the BIOS chip. A corresponding message may appear on the monitor screen. It requires either replacing the chip or rewriting its contents (if it is Flash memory).
— 10 short — Cannot write to CMOS memory. The CMOS chip or motherboard needs to be replaced.
— 11 short beeps — The external cache memory is faulty. Replacement of cache memory modules is required.
— 1 long + 2 short beeps – The video card is faulty. Check the connection between the monitor and the connector on the video card. The video card may need to be replaced.
— 1 long + 3 short beeps – The video card is faulty. Check the connection between the monitor and the connector on the video card. The video card may need to be replaced.
— 1 long + 8 short beeps – Problems with the video card, or the monitor is not connected. Check the installation of the video card in the expansion slot again.
Phoenix BIOS
Phonenix BIOS manufacturers have developed their own interleaving signal system.
1-1-3 – Error writing/reading CMOS data. The CMOS memory chip or motherboard needs to be replaced. It is also possible that the battery powering the CMOS memory chip has run out.
— 1-1-4 – Checksum error on the contents of the BIOS chip. The BIOS chip needs to be replaced or flashed (if using Flash memory).
— 1-2-1 – The motherboard is faulty. Turn off your computer for a while. If that doesn't help, replace the motherboard.
— 1-2-2 – DMA controller initialization error. The motherboard may need to be replaced.
— 1-2-3 – Error when trying to read/write to one of the DMA channels. The motherboard may need to be replaced.
— 1-3-1 – Problem with RAM. Replace memory modules.
— 1-3-3 – Error when testing the first 64 KB of RAM. Replace memory modules.
— 1-3-4 – Error when testing the first 64 KB of RAM. Replace memory modules.
— 1-4-1 – The motherboard is faulty. It may need to be replaced.
— 1-4-2 – Problem with RAM. Check the installation of memory modules in the slots.
— 1-4-3 – System timer error. The motherboard may need to be replaced.
— 1-4-4 – Error accessing the I/O port. This error may be caused by peripheral device, using this port for their work.
— 3-1-1 – Error initializing the second DMA channel. The motherboard may need to be replaced.
— 3-1-2 – Error initializing the first DMA channel. The motherboard may need to be replaced.
— 3-1-4 – The motherboard is faulty. Turn off your computer for a while. If this does not help, you will have to replace the motherboard.
— 3-2-4 – Keyboard controller error. The motherboard may need to be replaced.
— 3-3-4 – Error when testing video memory. The video card itself may be faulty. Check the installation of the video card in the expansion slot.
— 4-2-1 – System timer error. The motherboard may need to be replaced.
— 4-2-3 – Error when operating line A20. The keyboard controller is faulty. Try replacing the motherboard or keyboard controller.
— 4-2-4 – Error when working in protected mode. The CPU may be faulty.
— 4-3-1 – Error when testing RAM. Check the installation of modules in the slots. Memory modules may need to be replaced.
— 4-3-4 – Real time clock error. The motherboard may need to be replaced.
— 4-4-1 – Serial port testing error. May be caused by a device that uses the serial port for its operation.
— 4-4-2 – Parallel port testing error. May be caused by a device that uses a parallel port for its operation.
— 4-4-3 – Error when testing the math coprocessor. The motherboard may need to be replaced.
Good day. Today we'll talk about why computer beeps and what kind of signals BIOS(and it’s he who does it) serves it to you.
Although this article should have started differently.
Malicious power engineers turned off the lights, and when turned on, the computer began to beep briefly and refused to work? Did your brother kick the system unit, after which the latter emits one long howl and does not turn on? Is your computer beeping so loudly that everyone in the area is scared?
You can, of course, drop a brick on the energy workers and hang your brother by his feet from the ceiling, but how can you determine what happened to the computer and what does this very squeaking mean?
This material is specifically devoted to the sound signals (or lack thereof) of the computer, namely their decoding.
Let's get started.
BIOS Signals - Introductory
Let's figure out why the computer beeps and what's what
The signals differ depending on the type of BIOS that resides in your motherboard. You can find out by going into the BIOS itself (the DEL button at the earliest stage of booting the computer).
You can see approximately what a different BIOS looks like on BIOS. Generally speaking, all modern motherboards have long switched to UEFI, but the essence has not changed much from this.
Anyway, let's get to the point.
Award BIOS - computer beeps - decryption
The minimum list is something like this:
- Continuous signal - defective . Needs replacement.
- 1 short signal - No errors found. Typical behavior of a working computer - the computer boots normally.
- 2 short beeps- Minor errors found. A prompt appears on the monitor screen to enter the CMOS Setup Utility program to correct the situation. Check the reliability of the cables in the connectors and.
- 3 long beeps- Keyboard controller error. Restart your computer. The motherboard may need to be replaced.
- 1 long + 1 short beeps- Problems detected with . Check that the memory modules are installed correctly. Or replace with other memory modules.
- - Problem with - the most common malfunction. It is recommended to remove the board and reinsert it. Also check the connection to the video card.
- - Keyboard initialization error. Check the connection between the keyboard and the connector on the motherboard.
- 1 long + 9 short beeps- Error when reading data from the permanent memory chip. Reboot the computer or reflash the contents of the chip (if this mode is supported).
- 1 long repeating beep- Incorrect installation of memory modules. Try pulling them out and putting them in again.
- 1 short repeating signal- Problems with the power supply. Try to remove any dust that has accumulated in it.
AMI BIOS - computer beeps - decryption
What's what and how:
- 1 short beep- No errors found. The computer is ready to use.
- 2 short beeps- RAM parity error. Restart your computer. Check the installation of memory modules. Memory modules may need to be replaced.
- 3 short beeps- Error during operation of main memory (first 64 KB). Restart your computer. Check the installation of memory modules in the slots. Memory modules may need to be replaced.
- 4 short beeps- The system timer is faulty. The motherboard may need to be replaced.
- 5 short beeps- Defective. The processor may need to be replaced.
- 6 short beeps- The keyboard controller is faulty. Check the quality of the connection between the latter and the connector on the motherboard. Try replacing the keyboard. If this does not help, then the motherboard may need to be replaced.
- 7 short beeps- The motherboard is faulty.
- 8 short beeps- Problems with the video card.
- 9 short beeps- BIOS chip contents checksum error. A corresponding message may appear on the monitor screen. It requires either replacing the chip or rewriting its contents (if it is Flash memory).
- 10 short - Unable to write to CMOS memory. The CMOS chip or motherboard needs to be replaced.
- 11 short beeps- The external cache memory is faulty. Replacement of cache memory modules is required.
- 1 long + 2 short beeps
- 1 long + 3 short beeps- The video card is faulty. Check the connection between the monitor and the connector on the video card. The video card may need to be replaced.
- 1 long + 8 short beeps- Problems with the video card, or the monitor is not connected. Check the installation of the video card in the expansion slot again.
Let's move on to the phoenix and its signals.
Phoenix BIOS and AMI BIOS - computer beeps - decryption
Phonenix BIOS manufacturers have developed their own interleaving signal system.
- 1-1-3 signals - Error in writing/reading CMOS data. The CMOS memory chip or motherboard needs to be replaced. It is also possible that the battery powering the CMOS memory chip has run out.
- 1-1-4 signals - Checksum error on the contents of the BIOS chip. The BIOS chip needs to be replaced or flashed (when using Flash memory).
- 1-2-1 beeps - The motherboard is faulty. Turn off your computer for a while. If that doesn't help, replace the motherboard.
- 1-2-2 signals - DMA controller initialization error. The motherboard may need to be replaced.
- 1-2-3 signals - Error when trying to read/write to one of the DMA channels. The motherboard may need to be replaced.
- 1-3-1 signal - Problem with RAM. Replace memory modules.
- 1-3-3 signals - Error when testing the first 64 KB of RAM. Replace memory modules.
- 1-3-4 signals - Error when testing the first 64 KB of RAM. Replace memory modules.
- 1-4-1 beeps - The motherboard is faulty. It may need to be replaced.
- 1-4-2 signals - Problem with RAM. Check the installation of memory modules in the slots.
- 1-4-3 beeps - System timer error. The motherboard may need to be replaced.
- 1-4-4 signals - Error accessing the I/O port. This error may be caused by a peripheral device that uses this port for its operation.
- 3-1-1 signal - Error in initializing the second DMA channel. The motherboard may need to be replaced.
- 3-1-2 signals - Error initializing the first DMA channel. The motherboard may need to be replaced.
- 3-1-4 beeps - The motherboard is faulty. Turn off your computer for a while. If this does not help, you will have to replace the motherboard.
- 3-2-4 beeps - Keyboard controller error. The motherboard may need to be replaced.
- 3-3-4 signals - Error when testing video memory. The video card itself may be faulty. Check the installation of the video card in the expansion slot.
- 4-2-1 beeps - System timer error. The motherboard may need to be replaced.
- 4-2-3 signals - Error when operating line A20. The keyboard controller is faulty. Try replacing the motherboard or keyboard controller.
- 4-2-4 signals - Error when working in protected mode. The CPU may be faulty.
- 4-3-1 signals - Error when testing RAM. Check the installation of modules in the slots. Memory modules may need to be replaced.
- 4-3-4 signals - Real time clock error. The motherboard may need to be replaced.
- 4-4-1 signal - Serial port testing error. May be caused by a device that uses the serial port for its operation.
- 4-4-2 signals - Parallel port testing error. May be caused by a device that uses a parallel port for its operation.
- 4-4-3 signals - Error when testing the math coprocessor. The motherboard may need to be replaced.
This is such a big list. You can see the BIOS type in the BIOS itself.
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 a hardware test for the performance of the system unit. 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, if necessary, you can.
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 hard drive and motherboard connectors. 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 to the 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 similar problem has arisen, 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 is quite easy to check whether your monitor or keyboard is connected to 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 further.
