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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 RAM chips 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.
- Swap the motherboard.
You are getting 4 beeps indicating a timer not operational: - Check for foreign objects such as screws that may ground the motherboard and make sure that screws that hold the motherboard are not too tight.
- Swap the motherboard.
You are getting 5 beeps indicating a processor error: - Check for foreign objects such as screws that may ground the motherboard and make sure the screws that hold the motherboard are not too tight.
- Make sure the processor is seated properly.
- Swap the processor.
- Remove the motherboard and reinstall it.
- If the problem still persists, swap the motherboard.
You are getting 6 beeps indicating 8042 - gate A20 failure: - Check for foreign objects such as screws that may ground the motherboard and make sure the screws that hold the motherboard are not too tight.
- Try reseating the keyboard controller chip (if possible).
- Swap the keyboard.
- Swap the processor.
You are getting 7 beeps indicating processor exception interrupt error - Make sure the processor is seated properly.
- Swap the processor.
- Swap the motherboard.
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.
- Swap the video card.
- Swap the motherboard.
You are getting 9 beeps indicating ROM checksum error - If possible, try reseating the System ROM BIOS chip.
- If possible, try reflashing the system ROM BIOS.
- Swap the motherboard.
You are getting 10 beeps indicating CMOS shutdown register read/write error You are getting 11 beeps indicating cache memory bad - Make sure the system is configured properly (CMOS Setup Program and jumpers on the motherboard) for the RAM cache.
- If possible, replace the RAM cache.
- Swap the processor
- Swap the motherboard
This applies to:
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