1 short: The system boots normally. Congratulations, there is nothing wrong with your machine.
2 short: General error, please go to CMOS Setup and reset incorrect options.
1 long and 1 short: memory or motherboard error. Try another memory, if it still doesn't work, you have to replace the motherboard.
1 long 2 short: Display or graphics card error.
1 long 3 short: Keyboard controller error. Check the motherboard.
1 long 9 short: motherboard Flash RAM or EPROM error, BIOS corruption. Try changing the Flash RAM.
Continuous ringing (long sound): memory sticks are not inserted tightly or damaged. Re-insert the memory stick, if it still doesn't work, only replace a memory stick.
Continuous ringing: The power supply, monitor and graphics card are not connected properly. Check all the plugs.
Repeated short beeps: There is a problem with the power supply.
No sound, no display: power supply problem.
AWI BIOS:
1 short: memory refresh failure. Solution, replace the memory stick.
2 short: Memory ECC checksum error. Solution: Enter CMOS settings and turn off ECC checksum.
3 short: System base memory (1st 64KB) check failed.
4 short: System clock error.
5 short: CPU error.
6 short: Keyboard controller error.
7 short: System real mode error, can not switch to protected mode.
8 short: Display memory error. Note: Graphics card memory is referred to as video memory.
9 short: ROM BIOS check and error.
1 long 3 short: memory error.
1 long 8 short: Display test error.
Phoenix BIOS
1 short: System boots normally.
1 short 1 short 1 short: System power-up self-test initialization failed.
1 short 1 short 2 short: motherboard error.
1 short 1 short 3 short: CMOS or battery error.
1 short 1 short 4 short: ROM BIOS checksum failure.
1 short 2 short 1 short: System clock error.
1 short 2 short 2 short: DMA initialization failure.
1 short 2 short 3 short: DMA page register error.
1 short 3 short 1 short: RAM refresh error.
1 short 3 short 2 short: base memory error.
1 short 3 short 3 short: base memory error.
1 short 4 short 1 short: base memory address line error.
1 short 4 short 2 short: base memory checksum error.
1 short 4 short 3 short: EISA timer error.
1 short 4 short 4 short: EASA NMI port error.
2 short 1 short 2 short to 2 short 4 short 4 short (i.e., all combinations of sounds that start as 2 short): base memory error.
3 short 1 short 1 short: from DMA register error.
3 short 1 short 2 short: master DMA register error.
3 short 1 short 3 short: master interrupt handling register error.
3 short 1 short 4 short: slave interrupt processing register error.
3 short 2 short 4 short: keyboard controller error.
3 short 3 short 4 short: Display card memory error.
3 short 4 short 2 short: display error.
3 short 4 short 3 short: Display read-only memory not found.
4 short 2 short 1 short: clock error.
4 short 2 short 2 short: Shutdown error.
4 short 2 short 3 short: A20 gate error.
4 short 2 short 4 short: protection mode interrupt error.
4 short 3 short 1 short: memory error.
4 short 3 short 3 short: clock 2 error.
4 short 3 short 4 short: real clock error.
4 short 4 short 1 short: serial port error.
4 short 4 short 2 short: parallel port error.
4 short 4 short 3 short: digital coprocessor error.
Compatible BIOS:
1 short: System normal.
2 short: System power-up self-test (POST) failed.
1 long: power error, or display card error if no display.
1 long and 1 short: motherboard error.
1 long 2 short: graphics card error.
1 short 1 short 1 short: power supply error.
3 long 1 short: keyboard error.