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Bios problem Power On Self Test (POST) Beep Codes and Bios Error Messages


Answers :

Standard Original IBM POST Error Codes1 short beep\011Normal POST - system is ok
2 short beeps\011POST Error - error code shown on screen
No beep\011Power supply or system board problem
Continuous beep\011Power supply, system board, or keyboard problem
Repeating short beeps\011Power supply or system board problem
1 long, 1 short beep\011System board problem
1 long, 2 short beeps\011Display adapter problem (MDA, CGA)
1 long, 3 short beeps\011Enhanced Graphics Adapter (EGA)
3 long beeps\0113270 keyboard card


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IBM POST Diagnostic Code Descriptions 

 
100 - 199\011System Board
200 - 299\011Memory
300 - 399\011Keyboard
400 - 499\011Monochrome Display
500 - 599\011Color/Graphics Display
600 - 699\011Floppy-disk drive and/or Adapter
700 - 799\011Math Coprocessor
900 - 999\011Parallel Printer Port
1000 - 1099\011Alternate Printer Adapter
1100 - 1299\011Asynchronous Communication Device, Adapter, or Port
1300 - 1399\011Game Port
1400 - 1499\011Color/Graphics Printer
1500 - 1599\011Synchronous Communication Device, Adapter, or Port
1700 - 1799\011Hard Drive and/or Adapter
1800 - 1899\011Expansion Unit (XT)
2000 - 2199\011Bisynchronous Communication Adapter
2400 - 2599\011EGA system-board Video (MCA)
3000 - 3199\011LAN Adapter
4800 - 4999\011Internal Modem
7000 - 7099\011Phoenix BIOS Chips
7300 - 7399\0113.5" Disk Drive
8900 - 8999\011MIDI Adapter
11200 - 11299\011SCSI Adapter
21000 - 21099\011SCSI Fixed Disk and Controller
21500 - 21599\011SCSI CD-ROM System


 



AMI BIOS Beep Codes

 1 Short Beep\011One 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\011 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 SIMM's. 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\011Basically the same thing as 2 beeps. Follow that diagnosis above. 
4 Short Beeps\011Basically the same thing as 2 beeps. Follow that diagnosis above. It could also be a bad timer 
5 Short Beeps\011Your motherboard is complaining. Try reseating the memory and rebooting. If that doesn't help, you should consider another motherboard. You could probably get away with just replacing the CPU, but that's not too cost-effective. Its just time to upgrade! 
6 Short Beeps\011The chip on your motherboard that controls your keyboard (A20 gate) isn't working. First try another keyboard. If it 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. Replace the motherboard if it is soldered in. 
7 Short Beeps\011Your CPU broke overnight. Its no good. Either replace the CPU, or buy another motherboard. 
8 Short Beeps\011Your 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\011Your BIOS is bad. Reseat or Replace the BIOS. 
10 Short Beeps\011Your 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. 
11 Short Beeps\011Your problem is in the Cache Memory chips on the motherboard. Reseat or Replace these chips.
1 Long, 3 Short Beeps\011You'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\011Display / retrace test failed. Reseat the video card.

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