Sound BIOS signals can be heard in the very initial phase of turning on your computer, initial testing of the devices located in your system unit for performance. This testing is called the POST procedure; if it is accompanied by one short beep, this indicates the successful completion of the procedure.

If your computer emits constant beeps when turned on, this indicates that some device in it has failed. In this case, the faulty device is determined by the frequency and duration of these signals. The interpretation of the signals depends on the manufacturer of the BIOS, AMI BIOS or AWARD BIOS version. BIOS usually serves beep and outputs text message on the monitor screen. I would like to add that manufacturers very often change the meaning and significance of these signals. The exact information can be found in the instructions for the motherboard, and if there is none, only on the manufacturer’s official website. Let's still try to look at the decoding of the most common faults.

BIOS beeps

Okay, if the computer starts unsuccessfully, we will try to determine the malfunction relying on BIOS beeps, and what can be done when the computer does not boot and does not produce a certain sound signal, while there is no image on the screen.

1) The first thing you need to do is completely turn off the computer and leave it alone for a while.

2) Second, make sure that all connectors and devices are connected correctly.

3) Open the case and see if the video card and modules are tightly inserted into the corresponding connectors RAM.

4) If you have experimented with BIOS settings before, you need to reset all settings to default.

5) You should try to start the system with the minimum required devices, for example if you have several hard drives, leave only the one on which it is installed operating system, disconnect all kinds of TV tuners, that is, expansion cards, disconnect the drive. When you turn on your computer, try connecting devices one at a time and determine the problem.

6) Remove the RAM modules and look at the contacts, they may oxidize, then you need to clean them with an eraser and put them in place, try swapping the RAM modules, maybe there are free connectors for RAM on the motherboard, try using them. Try inserting the RAM one module at a time and try turning on the computer, it may be a problem with the RAM.

If you were unable to determine the malfunction, remember what actions you have recently performed on your computer, maybe the reason lies precisely in them.

BIOS beeps

AMI BIOS beeps
Signal and its meaning.
2 short /RAM parity error.
3 short / Malfunction of the first 64 KB of RAM.
4 short /System timer error.
5 short /CPU malfunction.
6 short / Keyboard controller malfunction.
7 short /Processor or system board fault.
8 short / Video adapter error.
9 short /BIOS ROM chip malfunction.
10 short / CMOS memory write error.
11 short /L2 cache failure.
1 long 3 short / RAM fault.
2 long 2 short / Floppy controller error.

If there are no signals at all, the power supply is usually faulty.
Award BIOS beeps.
Signal and its meaning.
1 short /No errors, system loading.
1 long 2 short / Video adapter fault.
1 long 3 short /No video card or video memory error.

A continuous beep indicates a memory module failure.

If there are no signals, the power supply is usually faulty.