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This document gives troubleshooting tips for when you hear beep codes and your desktop board does not boot up successfully.
You are getting 1, 2, or 3 beeps that indicate a memory failure.
1 beep - Refresh Error (with nothing on the screen and it is not a video problem)
2 beeps - Parity Error
3 beeps - Base 64 K memory failure
- Reseat the memory.
- Make sure that the contacts on the memory and the socket are clean.
- Try removing one bank of memory modules at a time. Note: Some systems might need to have a memory module in Bank 0.
- Try using memory modules from the same manufacturer with the same part number and speed.
- Check for a faulty memory module by trying the memory in a known good system.
- Trying known good memory in the system.
- Check the power supply and check for power fluctuations.
- If the steps above do not resolve the problem, the desktop board may be defective. Try a different desktop board.
You are getting 4 beeps indicating a timer not operational:
- Check for foreign objects such as screws that may ground the desktop board and make sure that screws that hold the motherboard are not too tight.
- Try a different desktop board.
You are getting 5 beeps indicating a processor error:
- Check for foreign objects such as screws that may ground the desktop board and make sure the screws that hold the board are not too tight.
- Make sure the processor is seated properly.
- Try a different processor.
- Remove the desktop board from the chassis and reinstall it.
- If the steps above do not resolve the problem, the desktop board may be defective. Try a different desktop board.
You are getting 6 beeps indicating 8042 - gate A20 failure:
- Check for foreign objects such as screws that may ground the desktop board and make sure the screws that hold the motherboard are not too tight.
- Try a different keyboard.
- Try a different processor.
You are getting 7 beeps indicating processor exception interrupt error
- Make sure the processor is seated properly.
- Try a different processor.
- Try a different desktop board.
You are getting 8 beeps indicating display memory read/write failure
- Make sure that you have a video card on your system.
- If possible, swap the memory on the video card.
- Try a different video card.
- Try a different desktop board.
You are getting 9 beeps indicating ROM checksum error
- Try reflashing the system BIOS.
- If possible, try reseating the system BIOS chip.
- Try a different desktop board.
You are getting 10 beeps indicating CMOS shutdown register read/write error
- Try a different desktop board.
You are getting 11 beeps indicating cache memory bad
- Make sure the system is configured properly (CMOS Setup Program and jumpers on the board) for the RAM cache.
- If possible, replace the RAM cache.
- Try a different processor.
- Try a different desktop board.
This applies to:
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