Many people know that when you start a computer, the BIOS is loaded first, which immediately scans and checks all devices for proper functioning and the ability to function normally. The sound of the BIOS when loading Windows is due to the fact that some error was detected in the system.
Of course, remembering all of them is almost impossible, so you always need to have instructions before your eyes. Or, for example, print this article and use it later.
It should be noted that BIOSes differ from different manufacturers, and, accordingly, sound signals too.
For reference, I would like to say how you can determine the BIOS company, so that you know, just in case, if something happens, and can correctly identify the initialization error. The name is visible when loading a PC, or with the help of some programs, for example, Everest (Aida).
Let's start with the oldies. I do not think that it is worth describing all kinds of signal options, but it is worth mentioning only the most basic and common ones.
IBM BIOS Signals :
1 short: POST completed successfully. That is, no errors were found.
Blank screen and 1 signal: the video system is malfunctioning, and therefore information is not displayed on the screen.
2 short: the monitor is not connected.
1 long and then 1 short: there were problems with the motherboard.
1 long and then 2 short: the video card has some problems (Mono / CGA)
If 1 is long and then 3 short: the video card has some problems (EGA / VGA)
A short signal that either repeats periodically or is simply continuous: any malfunctions or defects on the motherboard or PSU.
If the signal is completely absent , it means that your speaker, motherboard or PSU is not working .
AMI BIOS Signals :
1 short: POST completed successfully. That is, no errors were found.
1 long and then 1 short: any problems with the PSU were detected.
1 long and then 4 short: no video card detected.
2 short: the printer or scanner is on.
3 long beeps: RAM problems. Try reinstalling it or replacing the rulers.
4 short: the system timer failed.
5 short: found some problems with the processor.
7 short: mat. Boards have identified problems.
8 short: the video card memory generated an error.
1 long and then 2 short: the video card has some problems (Mono / CGA)
If 1 is long and then 3 short: the video card has some problems (EGA / VGA)
1 long and then 8 short: there is no monitor or the video card is malfunctioning.
A blank screen and the absence of any signal: the processor has failed, or there is poor contact at its legs.
The signal is continuous: The power supply is faulty or the computer has overheated
Award BIOS Signals:
1 short: POST completed successfully. No flaws were found.
2 short beeps: only slight interference was detected. You will need to check the contacts and various mounts of loops, hard drives, optical drive and the like.
3 long: an error caused by the controller to work with the keyboard.
1 short and then 1 long: error reading or writing information from RAM.
1 long and then 2 short: video card errors detected.
1 long and then 3 short: error reading or writing information from video memory.
1 long and then 3 short: error reading or writing data from the ROM.
A short signal that repeats periodically: some defects are detected in the power supply.
A long beep that repeats periodically: RAM problems.
Repeating beeps, high or low frequencies: Problems with the processor.
Continuous signal: Faulty power supply.
And lastly ... If you have some other version of BIOS, or if you want to know all the sound signals of the BIOS, then go to the manufacturer's website and see the instructions. If you do not find detailed instructions on such sites, then try to look for more detailed information on the links that are provided in the Everest program.