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CPU error light on MSI motherboard - help!

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I just built a new PC with an MSI B550 motherboard. Everything seemed to be working, but now the red CPU error light on the motherboard is staying on and the system won't boot. I've double checked all the connections but can't figure out what's wrong. Has anyone else encountered this issue or have suggestions on what to try next?

3 Answers
4

A few things to check:

  1. Make sure the CPU is seated properly in the socket and the lever is fully locked in place. An improperly seated CPU can cause that error light.
  2. Verify you have the CPU power connector from the power supply plugged into the motherboard near the CPU socket. It's a 4+4 pin connector.
  3. Try reseating the RAM. Make sure the modules click securely into the slots.
  4. Clear the CMOS by removing the battery for a few minutes then putting it back. This will reset the BIOS settings to default.
2

A few more things to try in addition to the great suggestions above:

  • Reseat the RAM. Make sure the modules click securely into the slots. Try booting with just a single RAM stick installed.
  • Disconnect all unnecessary components from the motherboard (drives, expansion cards, etc.) and see if it boots with minimal hardware installed.
  • If you have another compatible CPU available, try that in the board to isolate if it's a CPU issue or board problem.
  • As a last resort, if nothing else works, you may need to RMA the board for a replacement if it's still under warranty.




0

I have same issue last year. I just reinstalled CPU, the problem resolved.

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