AMI BIOS beep codes
# of beeps
You're supposed to hear at least one beep.
If you truly don't hear anything, either your computer's power supply, motherboard,
or PC speaker is no good.
One beep is good! Everything is A-OK, that
is, if you see things on the screen. If you don't see anything, check your
monitor and video card first. Is everything connected? If they seem fine,
your motherboard has some bad chips on it. First reset the SIMMs and reboot.
If it does the same thing, one of the DRAM refresh chips on the motherboard
is bad, and you most likely need to get another motherboard since these
chips are soldered on.
Memory parity error
Your computer has memory problems. First,
check video. If video is working, you'll see an error message. If not, you
have a parity error in your first 64K of memory. Check your SIMMs. Reseat
them and reboot. If this doesn't do it, the memory chips may be bad. You
can try switching the first and second banks memory chips. First banks
are the memory banks in which your CPU finds its first 64K of base memory.
You'll need to consult your manual to see which bank is first. If all of
your memory tests good, you probably need to buy another motherboard.
Base 64K memory failure
Same as 2 beeps; follow diagnosis above.
Timer not operational
Your problem could be a bad timer. The system
timer failed to work properly.
Your motherboard is complaining. Try reseating
the memory and rebooting. Since this indicated a processor failure, you
could probably get away with just replacing the CPU.
i8042 - gate A20 failure
The chip on your motherboard that controls
your keyboard isn't working. First, try another keyboard. If that doesn't
help, reseat the chip that controls the keyboard, if it isn't soldered in.
If it still beeps, replace the chip if possible. The chip is erroring in
the gate A20 switch that allows the system to run in virtual mode. Replace
the motherboard if the chip is soldered in.
Processor exception interrupt error
Your CPU is broken and no good. It has generated
an interrupt failure error.
Display memory read / write error
Your video card isn't working. Make sure
it is seated well in the bus. If it still beeps, either the whole card is
bad or the memory on it is. Your best bet is to install another video card.
ROM checksum error
Your BIOS is bad; replace it.
CMOS shutdown register read / write error
Your problem lies deep inside the CMOS. All
chips associated with the CMOS will likely have to be replaced. Your best
bet is to get a new motherboard.
Cache memory bad
Your cache memory is bad and your computer
disabled it for you. You could reactivate it by pressing -Ctrl- -Alt- -Shift-
-+- , but you probably shouldn't. Instead, replace your external cache memory.