Award BIOS:
1 Short: The system starts normally.
2 Short: conventional error. Workaround: Reset BIOS.
1 length 1 short: RAM or motherboard error.
1 length 2 Short: monitor or display card error.
1 length 3 short: keyboard controller error.
1 long 9 short: motherboard Flash Ram or EPROM error, BIOS is damaged.
Constantly no sound (long): The memory bar is not inserted or damaged.
Keep no sound: power supply, display is not connected to the graphics card.
Repeat short noise: There is a problem with the power supply.
No sound No display: The power is problematic.
Ami BIOS:
1 Short: memory refresh failed. Solution, replace the memory module.
2 Short: Memory ECC check error. Workaround: Enter CMOS settings and turn off the ECC check.
3 Short: System Basic Memory (1st 64KB) check failed.
4 Short: The system clock is wrong.
5 Short: CPU error.
6 Short: Keyboard controller error.
7 Short: System real mode error, cannot switch to protection mode.
8 Short: Show memory errors. Note: The graphics card memory is referred to as a memory.
9 short: ROM BIOS test and error.
1 length 3 short: memory error.
1 length 8 short: Show test errors.
Phoenix BIOS
1 Short: The system starts normally.
1 short 1 short 1 short: system power-on 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 check failed.
1 Short 2 short 1 short: system clock error.
1 Short 2 short 2 short: DMA initialization failed.
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: basic memory error.
1 Short 3 short 3 short: Basic memory errors.
1 short 4 short 1 short: basic memory address line error.
1 short 4 short 2 short: basic memory check error.
1 Short 4 short 3 short: EISA sequencer error.
1 Short 4 short 4 short: EASA NMI error.
2 Short 1 short 2 short to 2 short 4 short 4 short (ie, all starting 2 short sounds): Basic memory errors.
3 Short 1 short 1 short: from the DMA register error.
3 Short 1 short 2 short: the main DMA register error.
3 Short 1 short 3 short: Main interrupt processing register error.
3 Short 1 short 4 short: from the 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: Show errors.
3 Short 4 short 3 short: No read-only memory is 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 is wrong.
4 short 4 short 3 short: Digital coprocessor error.
Compatible with BIOS:
1 Short: The system is normal.
2 Short: System Power Distribution (POST) failed.
1 length: Power error, if there is no display, it is a display card error.
1 length 1 short: motherboard error.
1 length 2 short: graphics card error.
1 short 1 short 1 short: power supply error.
3 long 1 short: keyboard error.
