1 long beepA memory problem: remove and reseat memory.
1 long, 2 short or 1 long, 3 shortVideo card problem or problem with its memory.Replace the graphics card or its memory.
ContinuousA memory and/or video problems. Reseat or replace
memory and/or graphics card.
1,1,3CMOS unreadable. Replace the motherboard.
1,1,4BIOS failure. Replace the BIOS.
1,2,1The timer chip has failed. Replace the motherboard.
1,2,2 or 1,2,3 or 1,3,1 or 1,3,3 or 1,3,4 or 1,4,1 or 4,2,1 or 4,3,1 or 4,3,2 or 4,3,3Motherboard error; replace it.
1,3,3Memory problems. Try reseating or replacing RAM.
1,4,2Faulty memory. Test and replace your RAM.
2,any, anyAny beeps after two indicates bad memory. Run a
memory checking utility and replace RAM as necessary.
3,1, anyYour motherboard has a faulty chip; replace it.
3,2,4Keyboard controller error. Replace the keyboard,
controller chip, or the motherboard to resolve it.
3,3,4No video card. Try reseating it or replacing it.
4,2,2 or 4,2,3Replace the keyboard. If this persists, it’s
a motherboard problem; replace it.
4,2,4Remove and replace all PCI cards one by one to find
the faulty one, then replace it.
4,3,4Clock error. Reset the motherboard clock using
its set-up program. Replace the CMOS battery if
necessary. If this fails, replace the power supply.
4,4,1 or 4,4,2Use the motherboard manual to disable the serial
ports and add an I/O card to replace them.
4,4,3Maths coprocessor malfunctioning. Use a low-level
diagnostic program to confirm this, then disable it.


NoneFaulty speaker, broken mobo or PSU problem.
1 short beepRAM refresh, interrupt timer or interrupt
controller failure. Replace your motherboard.
2 short beeps or 3 short beepsIndicates memory problems. Check the seating of
memory chips or replace the memory.
4 short beepsSystem timer failure. Replace the motherboard.
5 short beepsCPU failure.
6 short beepsKeyboard control chip error. Replace keyboard.
If it persists, chip may need to be replaced/reseated.
7 short beepsCPU exception error. Replace CPU and/or mobo.
8 short beepsVideo card failure. Reseat the graphics card.
9 short beepsROM checksum error. BIOS ROM is bad – replace it.
10 short beepsThere’s a problem with the CMOS. Replace your mobo.
11 short beepsL2 cache memory failure. Replace L2 cache memory.
1 long, 3 shortMemory test failure in RAM over the first 64k.
1 long, 8 shortDisplay test error. Missing or broken video card.

Excerpt from PC.Answers August 2005

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