When an IBM compatible computer is first turned on, the hardware runs a Power-On Self Test (POST). If errors are encountered during this POST test, they are usually displayed via an audio beep or in the form of a code number flashed across the screen. With this audio code in hand, you can determine what part of the system is having problems and find a solution.
The pattern of beeps whether its the number of beeps or the length of those beeps will give you an indication of the actual problem. Its a distress signal from the computer in a morse code like pattern. Here are some beep codes that might come in handy someday.
AMI BIOS Beep Codes
1 Short Beep One beep is good! Everything is 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 SIMM's and reboot. If it does the same thing, one of the memory chips on the
motherboard are bad, and you most likely need to get another motherboard since these chips are soldered
on.
2 Short Beeps 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. First check your RAMs. 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 that your CPU finds its first 64K of base memory in. You'll
need to consult your manual to see which bank is first. If all your memory tests good, you probably need to
buy another motherboard.
3 Short Beeps Basically the same thing as 2 beeps. Follow that diagnosis above.
4 Short Beeps Basically the same thing as 2 beeps. Follow that diagnosis above. It could also be a bad timer
5 Short Beeps Your motherboard is complaining. Try reseating the memory and rebooting. If that doesn't help, you should
consider another motherboard.
8 Short Beeps 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. Best bet is to install another video card.
9 Short Beeps Your BIOS is bad. Reseat or Replace the BIOS.
10 Short Beeps 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.
1 Long, 3 Short Beeps You've probably just added memory to the motherboard since this is a conventional or extended
memory failure. Generally this is caused by a memory chip that is not seated properly. Reseat the
memory chips.
1 Long, 8 Short Beeps Display / retrace test failed. Reseat the video card.
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