ami BIOS signals 2 short. BIOS Award Signals

Hearing a BIOS signal (1 long beep), the user usually becomes wary. After all, as you know, in most BIOSes the message about the successful completion of hardware testing sounds somewhat different, although it is similar - one signal, but a short one. Is there any cause for concern in this case? Practice shows that in most cases - Yes.

First of all, it is worth defining the concept of “long signal”. In many cases, one continuous sound can be considered long. If you hear a similar sound and you have an Award BIOS installed, then this means that the power supply is faulty. In the case of Phoenix BIOS, in a similar situation, there is a malfunction of the CPU cooler fan. In the Compaq BIOS, this type of sound indicates a problem with the RAM.

However, most often the user may encounter a slightly different situation, when there is only a long but time-limited signal. This type of signal is used by many BIOS manufacturers to encode error messages.

However, one long BIOS beep is a sound that is often used for more than just signaling errors. For example, you can find BIOS versions from the well-known manufacturer American Megatrends, in which the BIOS signal 1 long beep is used to notify that tests have completed normally, instead of the usually used short beep. A similar approach is also used in the Mylex 386 BIOS. This factor should also be kept in mind, especially if you are dealing with a certain computer for the first time.

In AST BIOS, one long squeak has a completely different meaning, namely, an error detected when testing the first channel of the DMA controller. Typically, this situation means the microcontroller is faulty, which may result in the need to replace the entire motherboard.

In IBM BIOS, a similar BIOS signal, one long beep, also has its own meaning - this is a malfunction of the video system. You can try to fix this problematic situation yourself by checking that the video card is securely installed in the motherboard expansion slot.

Over time, any technology fails, and the computer is certainly no exception. A user who has been working on a computer for several years knows that if there is a hardware or software failure, the computer may refuse to work. For example, when the computer beeps and does not turn on, emitting incomprehensible signals for the user, before Windows loads.

First, let me explain why the computer beeps when turned on. You must understand that the squeaks are produced by the speaker, which is located in the system unit. And if you don’t know why the system unit beeps, then below I will show a table where you can see the reasons for this.

The computer can beep in different ways, emit one long beep, two short beeps, three short beeps, or even repeat short beeps 7 times in a row, etc. To determine what these signals mean, tables of sound signals for different types of Bios will help us. Bios is located on the motherboard, which is located in the system unit.

When you turn on the computer and a black screen appears, the connected equipment to the computer is checked. If all equipment is in working order and correctly connected, then Windows loads. If your computer refuses to boot, this article will help you determine which computer hardware has failed.

After you understand from the squeaks why the computer is beeping, you need to borrow this part from your friend and try to turn on your computer using a part from someone else’s computer.

Let's repeat our steps if the computer does not start and beeps.

  1. You need to turn on the computer and count how many squeaks the speaker makes.
  2. Check your Bios version when you boot your computer. Look for the inscription, Bios version or something like that. Usually the inscription is located at the very top.
  3. Find the version of your BIOS and the number of signals in the table.
  4. Next, find this part, connect it to the computer and turn it on. If the computer turns on and there are no beeps, then you have solved the problem by almost 90 percent. All that remains is to find or buy the part in order to give the part to the person from whom you took it.

I think you understand, because I presented it as clearly as possible.

Note: signals can be short or long.

IBM BIOS

Number of beeps Description
1 short
1 beep and blank screen Video system is faulty
2 short The video system is faulty (monitor not connected)
3 long Motherboard faulty (keyboard controller error)
1 long, 1 short Motherboard is faulty
1 long, 2 short Video system faulty (Mono/CGA)
1 long, 3 short Video system (EGA/VGA) is faulty
Repeating short Malfunctions related to the power supply or motherboard
Continuous Problems with the power supply or motherboard
Absent The power supply, motherboard or speaker is faulty
Number of beeps Description
1 short
2 short Minor errors found. A prompt appears on the monitor screen to enter the CMOS Setup Utility program and correct the situation.
Check that the cable is securely fastened. If you checked the cable and it didn’t help, then you need to replace it
3 long Keyboard controller error
1 short, 1 long RAM error
1 long, 2 short Video card error
1 long, 3 short Video memory error
1 long, 9 short Error reading from ROM
Repeating short Power supply problem. RAM problems
Repeating long RAM problems
Repeated high-low frequency CPU problems
Continuous Power supply problem

AMI BIOS

Number of beeps Description
1 short
1 long, 1 short Problems with the power supply
1 long, 4 short No Video Card
2 short RAM parity error or you forgot to turn off the scanner or printer
3 short Error in the first 64 KB of RAM
4 short System scanner malfunction
5 short Processor problems
6 short Keyboard controller initialization error
7 short Problems with the motherboard
8 short Video card memory error
9 short BIOS checksum is incorrect
10 short CMOS write error
11 short System board cache error
1 long, 2 short Video card error (Mono-CGA)
1 long, 3 short Video card error (EGA-VGA)
1 long, 8 short Problems with the video card or the monitor is not connected
Missing and blank screen The processor is faulty. The microcircuit contact may be bent. If that doesn't help, replace the processor.
Continuous beep The power supply is faulty or the computer is overheating

AST BIOS

Number of beeps Description
1 short Error when checking processor registers. Processor failure
2 short Keyboard controller buffer error. Keyboard controller malfunction
3 short Keyboard controller reset error. Problem with keyboard controller or system board
4 short Keyboard communication error
5 short Keyboard error
6 short System board error
9 short BIOS ROM checksum mismatch. The BIOS ROM chip is faulty.
10 short System timer error. The system timer chip is faulty.
11 short Chipset error.
12 short Power management register error in non-volatile memory.
1 long DMA controller error 0. The channel 0 DMA controller chip is faulty.
1 long, 1 short DMA controller error 1. The channel 1 DMA controller chip is faulty.
1 long, 2 short Frame retrace suppression error. The video adapter may be faulty.
1 long, 3 short Error in video memory. The memory of the video adapter is faulty.
1 long, 4 short Video adapter error. The video adapter is faulty.
1 long, 5 short Memory error 64K.
1 long, 6 short Failed to load interrupt vectors. BIOS could not load interrupt vectors into memory
1 long, 7 short Failed to initialize video hardware.
1 long, 8 short Video memory error.

Pheonix BIOS

The hyphen (-) indicates a pause.

Number of beeps Description
1-1-3 Error writing/reading data to/from CMOS memory.
1-1-4 An error was detected while calculating the checksum of the BIOS contents.
1-2-1
1-2-2 or 1-2-3 DMA controller initialization error.
1-3-1 Error in initializing the RAM regeneration circuit.
1-3-3 or 1-3-4 Error initializing the first 64 KB of RAM.
1-4-1 Motherboard initialization error.
1-4-2
1-4-3
1-4-4 Error writing/reading to/from one of the I/O ports.
2-1-1 An error was detected when reading/writing bit 0 (in hexadecimal) of the first 64 KB of RAM
2-1-2 An error was detected when reading/writing the 1st bit (in hexadecimal) of the first 64 KB of RAM
2-1-3 An error was detected when reading/writing the 2nd bit (in hexadecimal) of the first 64 KB of RAM
2-1-4 An error was detected when reading/writing the 3rd bit (in hexadecimal) of the first 64 KB of RAM
2-2-1 An error was detected while reading/writing the 4th bit (in hexadecimal) of the first 64 KB of RAM
2-2-2 An error was detected while reading/writing the 5th bit (in hexadecimal) of the first 64 KB of RAM
2-2-3 An error was detected while reading/writing the 6th bit (in hexadecimal) of the first 64 KB of RAM
2-2-4 An error was detected when reading/writing the 7th bit (in hexadecimal) of the first 64 KB of RAM
2-3-1 An error was detected while reading/writing the 8th bit (in hexadecimal) of the first 64 KB of RAM
2-3-2 An error was detected when reading/writing the 9th bit (in hexadecimal) of the first 64 KB of RAM
2-3-3 An error was detected while reading/writing the 10th bit (in hexadecimal) of the first 64 KB of RAM
2-3-4 An error was detected when reading/writing the 11th bit (in hexadecimal) of the first 64 KB of RAM
2-4-1 An error was detected when reading/writing the 12th bit (in hexadecimal) of the first 64 KB of RAM
2-4-2 An error was detected while reading/writing the 13th bit (in hexadecimal) of the first 64 KB of RAM
2-4-3 An error was detected while reading/writing the 14th bit (in hexadecimal) of the first 64 KB of RAM
2-4-4 An error was detected while reading/writing the 15th bit (in hexadecimal) of the first 64 KB of RAM
3-1-1 Error initializing the second DMA channel.
3-1-2 or 3-1-4 Error initializing the first DMA channel.
3-2-4
3-3-4 Error initializing video memory.
3-4-1 Serious problems arose when trying to access the monitor.
3-4-2 The video card BIOS cannot be initialized.
4-2-1 Error initializing the system timer.
4-2-2 Testing is complete.
4-2-3 Keyboard controller initialization error.
4-2-4 Critical error when the CPU enters protected mode.
4-3-1 Error initializing RAM.
4-3-2 Error initializing the first timer.
4-3-3 Error initializing the second timer.
4-4-1 Error initializing one of the serial ports.
4-4-2 Parallel port initialization error.
4-4-3 Error initializing math coprocessor.
Long, continuous beeps The motherboard is faulty.
Siren sound from high to low frequency The video card is faulty, check the electrolytic capacitors for leaks or replace everything with new ones that are known to be good.
Continuous signal The CPU cooler is not connected (defective).

Compaq BIOS

Number of beeps Description
1 short
1 long + 1 short BIOS CMOS memory checksum error. The ROM battery may have run out.
2 short Global error.
1 long + 2 short Error initializing video card. Check that the video card is installed correctly.
7 beeps (1 long, 1 s, 1?, 1 short, pause, 1 long, 1 short, 1 short) AGP video card malfunction. Check that the installation is correct.
1 long constant RAM error, try rebooting.
1 short + 2 long RAM malfunction. Reboot via Reset.

DELL BIOS

The hyphen (-) indicates a pause.

Number of beeps Description
1-2 Video card not connected
1-2-2-3 BIOS ROM checksum error
1-3-1-1 DRAM update error
1-3-1-3 Keyboard error
1-3-3-1 Memory faulty
1-3-4-1 RAM error on line xxx
1-3-4-3 RAM error on least significant bit xxx
1-4-1-1 RAM error on high bit xxx

If you have a printer, it is better to print this article, in case your computer does not turn on at the most opportune moment and at the same time emit signals. In one article I already touched on the topic of BIOS: "".

It happens that you start the computer, and it makes strange sounds, signals, squeaking, purring... Moreover, both short and long sound signals appear. Often, when sounds appear, the computer will no longer start. What to do in such a situation? There is an answer!

Listen to the beeps first. Remember how many short and long sounds there were. Then look in the special list of beeps BIOS your combination, and you will find out what the computer is complaining about.

List of test sounds POST (PoweronSelf-Test)

Let's look at the types of signals:

One short beep- no errors found. Your personal computer (PC) is fully operational.

Two short beeps- RAM parity error.

The solution to this problem is to restart your PC. Clean the connectors from dust. Check that the RAM modules are installed correctly. The memory modules may need to be replaced.

You can check the serviceability of the modules using the program memtest86+

Three short beeps— error during operation of main memory (first 64 KB).

The solution to the problem is to restart your computer. Check that the RAM modules are installed correctly. Clean the connectors from dust. The memory modules may need to be replaced.

Four short beeps— indicates a system timer malfunction.

Solution: The motherboard may need to be replaced or repaired. You can try resetting the system BIOS.

Five short beeps- The central processor is faulty.

The solution to the problem is to clean the connectors from dust. Check that the processor is installed correctly. It may need to be replaced. Try a similar processor to identify the exact problem.

Six short beeps— the keyboard controller is faulty.

The solution to the problem is to check the connection of the keyboard connector on the motherboard. If that doesn’t help, try using another keyboard to make sure the keyboard connector is working. PS /2. If this does not give results, then use USB keyboard. The motherboard may need to be replaced.

Seven short beeps- the motherboard or processor is faulty.

Solution: Check all pins on the motherboard. The north bridge on the motherboard may have failed.

Eight short beeps— they talk about a problem with the video card.

The solution to the problem is if the video card is integrated into the motherboard, then you need to install an external video card. If an external one is installed, check the connections. If all else fails, then try another video card to identify the problem.

Nine short beeps- fatal checksum error on the contents of the BIOS chip.

Solution: if the computer starts, then go into the BIOS and reset the settings to standard. Then check the time and date settings. If it doesn't help, you'll need to reflash it. BIOS . The new version can always be downloaded from the motherboard manufacturer's website. If you are too lazy to suffer, then the problem can be solved by installing a new motherboard.

Ten short sounds— it is impossible to write to CMOS memory. Perhaps you decided to reflash the BIOS or wrote down the wrong one...

The solution to the problem is to reflash the chip, replace the CMOS chip or motherboard.

Eleven short beeps— external cache memory is faulty.

Solution: if the computer starts, then go into the BIOS and reset the settings to standard. Then check the time and date settings. If it doesn’t help, then try “throwing up” the working processor.

One long and two short beeps; one long and three short beeps; one long and eight short beeps - indicates a faulty video card orits installation is incorrect.

Solution to the problem - check the connection of the monitor to the connector on the video card, and also check that the video card is installed correctly in the slot AGP or PCI-Express . The video card may need to be replaced. Drop in a working video card to check.

One long continuous beep and repetition of short signals- they tell us about a malfunction in the power supply.

Solution to the problem - check all connections to the power supply (cord, surge protector, connector), and then in the system unit: from the power supply to the components.

Repeating long signals— incorrect operation of the RAM or modules are disconnected or not inserted completely.

Solution to the problem - check whether the RAM is installed and whether it is fully seated in the slots (if there is more than one RAM stick). Try running one at a time to identify the faulty memory module. Clean the connectors from dust.

Often, with many problems, resetting the BIOS and setting the standard correct settings, as well as correctly setting the time and date data, helps. You can reset the BIOS by removing the battery from the motherboard for 10 minutes.

Dear friend! I hope these tips helped and you were able to troubleshoot your computer. Do not forget about safety precautions when working with electrical appliances.

If you heard 3 short beeps during the BIOS hardware check procedure, this means that not everything is in order in your computer. However, it will be difficult for you to find the cause of the malfunction until you look at the BIOS signal table and find out what this signal means.

As you know, different BIOS manufacturers use different tables of sound error messages, and they do not always coincide with each other. As for the situation when you hear 3 short beeps when loading the BIOS, it appears only in some BIOS versions.

One such BIOS version is AMI BIOS. As a rule, if your computer's motherboard is equipped with a similar version of the BIOS, then an information message containing three short beeps indicates an error when checking the first 64 KB of RAM.

Nowadays, when the amount of RAM in modern computers is measured in gigabytes rather than kilobytes, the chance of receiving such an information message is small. However, it may appear on some older computers. If such an error does occur, then you should try to restart the computer using the Reset button. If three short beeps still remain, then you should try to check the reliability of the memory modules in the slots. In the same case, if all the above measures do not bring results, then it will be necessary to change the memory modules.

This signal – three short beeps – has a slightly different meaning in the BIOS from AST. In this BIOS, a similar sequence of sounds means something else - a malfunction of the keyboard controller.

If you hear three short beeps when checking the hardware carried out by the AST BIOS, you should not immediately panic. It is possible that after you reboot again, these signals will disappear and you will be able to use your computer again. If this operation does not help restore the computer's functionality, then you will most likely have to change the keyboard controller, or even the motherboard itself.

Probably, almost every computer user has noticed that when starting up, a characteristic sound is heard, similar to a squeak. In most cases, if all is well, there will be one short beep. Thus, the system informs us about the state of the PC even during startup, before Windows loads.

BIOS(Basic Input/Output System - basic input/output system) is a system-level program located in the BIOS microprocessor. Intended for the initial startup of the computer, it is loaded first after turning on the computer.

When the system starts, the BIOS starts the computer and performs a self-test (Power-On Self Test - POST) to perform general diagnostics of the system and if there are problems, the computer will emit a certain sequence of signals that you only have to decipher.

If you don't hear any sounds, then it's possible that you have a missing speaker on your motherboard. In the event of a computer malfunction, the absence of a speaker makes it a little more difficult to find the problem, but is not critical.

In modern motherboards, the speaker began to be built-in. On older models, the speaker was connected to the board.

BIOS Manufacturer

Each BIOS manufacturer has its own sequence and interpretation of sound signals. Before you begin decoding, you need to find out the manufacturer.

Method 1

The easiest way to determine the company is at the time of boot, usually indicating the manufacturer and BIOS version.

Method 2

You can go into the BIOS during startup and find the “System Information” item or using the Everest (Aida) program in Windows. In both cases, all information will be indicated.

Now all modern computers come with an updated BIOS called UEFI.

Now that we know the BIOS manufacturer, it will not be difficult for us to decipher the sound signals.

AMI BIOS

Signal

Meaning (decoding)

1 short

No errors found

2 short

RAM parity error

3 short

Malfunction of the first 64 KB of RAM

4 short

System timer is faulty

5 short

Processor failure

6 short

Keyboard controller malfunction

7 short

System board failure

8 short

Video memory error

9 short

Incorrect BIOS checksum

10 short

CMOS memory write error

11 short

Cache error

1 long 2 short

Video adapter is faulty

1 long 3 short

2 long 2 short

Floppy controller error

No signals

AWARD BIOS

Signal

Meaning (decoding)

1 short

No errors found

Continuous or short repetitive

The power supply is faulty or there is a short circuit in the power supply circuits

1 long or long repeating

RAM error

1 long 2 short

Video adapter not detected or video memory error

1 long 3 short

Video adapter error or keyboard error

3 long

Keyboard controller error

1 long 9 short

BIOS read error or BIOS chip is faulty

2 short

A non-critical error was detected.

No signals

The power supply or system board is faulty

Phoenix BIOS

Phoenix BIOS beeps consist of several series of short beeps at intervals. For example, a signal with code 1-2-3 will sound like this: one short beep, pause, two short beeps, pause, three short beeps.

Signal

Meaning (decoding)

Error when reading data from the built-in CMOS memory chip

CMOS chip checksum error

Error on system board

System board DMA controller error

Error reading or writing data to one of the DMA channels

Error in RAM

Error in the first 64 KB of main memory

System board error

RAM testing error

from 2-1-1 to 2-4-4

Error in one of the bits of the first 64 KB of RAM

Error in the first DMA channel

Error in the second DMA channel

Error processing interrupts

Motherboard interrupt controller error

Keyboard controller error

Video adapter error

Error when testing video memory

Error while searching for video memory

System Timer Error

Completion of testing

Keyboard controller error

CPU error

RAM testing error

System Timer Error

Real Time Clock Error

Serial port error

Parallel port error

Math coprocessor error

Error in the operation of adapters that have their own BIOS

Error when calculating BIOS checksum

Error in RAM operation

Keyboard controller error

Errors when testing RAM

Error handling unexpected interrupts

IBM BIOS

Signal

Meaning (decoding)

1 short

No errors found

1 beep and blank screen

Video adapter is faulty

2 short

Video adapter is faulty

3 long

Motherboard faulty (keyboard controller error), RAM faulty

1 long, 1 short

Motherboard is faulty

1 long, 2 short

Video system faulty (Mono/CGA)

1 long, 3 short

Video system (EGA/VGA) is faulty

Repeating short

Malfunctions related to the power supply or motherboard

Continuous

The power supply or system board is faulty

Absent

The power supply, motherboard, or speaker is faulty

AST BIOS

Signal

Meaning (decoding)

1 short

Error when checking processor registers. Processor failure

2 short

Keyboard controller buffer error. Keyboard controller malfunction.

3 short

Keyboard controller reset error. The keyboard controller or system board is faulty.

4 short

Keyboard communication error.

5 short

Keyboard error.

6 short

System board error.

9 short

BIOS ROM checksum mismatch. The BIOS ROM chip is faulty.

10 short

System timer error. The system timer chip is faulty.

11 short

System logic chip (chipset) error.

12 short

Power management register error in non-volatile memory.

1 long

DMA controller error 0. The channel 0 DMA controller chip is faulty.

1 long, 1 short

DMA controller error 1. The channel 1 DMA controller chip is faulty.

1 long, 2 short

Frame retrace suppression error. The video adapter may be faulty.

1 long, 3 short

Error in video memory. The memory of the video adapter is faulty.

1 long, 4 short

Video adapter error. The video adapter is faulty.

1 long, 5 short

Memory error 64K.

1 long, 6 short

Failed to load interrupt vectors. BIOS could not load interrupt vectors into memory

1 long, 7 short

The video subsystem failed to initialize.

1 long, 8 short

Video memory error.

Compaq BIOS

Signal

Meaning (decoding)

1 short

No errors found

1 long + 1 short

BIOS CMOS memory checksum error. The ROM battery may have run out.

2 short

Global error.

1 long + 2 short

Error initializing video card. Check that the video card is installed correctly.

7 beeps (1 long, 1 s, 1?, 1 short, pause, 1 long, 1 short, 1 short)

AGP video card malfunction. Check that the installation is correct.

1 long constant

RAM error, try rebooting.

1 short + 2 long

RAM malfunction. Reboot via Reset.

DELL BIOS

As with the Phoenix BIOS, the DELL BIOS uses a similar signaling system. For example, 1-3-1-1 would sound like this: one beep, pause, three beeps, pause, one beep, pause, one beep.

Signal

Meaning (decoding)

Video card not connected

BIOS ROM checksum error

DRAM update error

Keyboard error 8742

Memory faulty

RAM error on line xxx

RAM error on least significant bit xxx

1-4-1-1 test

RAM error on high bit xxx

Quadtel BIOS

Signal

Meaning (decoding)

1 short beep

No errors found

2 short beeps

CMOS RAM is damaged. Replace IC if possible

1 long, 2 short beeps

Video adapter error. The video adapter is faulty. Reinstall the video adapter or replace the adapter if possible

1 long, 3 short beeps

One or more of the peripheral controllers is faulty. Replace controllers and retest

UEFI BIOS

Signal

Meaning (decoding)

1 short

2 short

There are non-critical errors.

3 long

The keyboard controller generated an error

1 short + 1 long

RAM is faulty

1 long + 2 short

The video card signals an error

1 long + 3 short

Video memory error

1 long + 9 short

Error reading from ROM

Continuous short beeps

Malfunction of the power supply or RAM

Continuous long beeps

RAM problems

Alternating long and short signals

Processor failure

Continuous signal

Indicates problems with the power supply