You may have a faulty sensor on your board.
If you put the system together, you are able to ensure that the CPU fan is mounted securely without play, that there is a good thermal paste on the CPU between it and the fan,
Ensure that MOBO 5 is set to read the correct sensor,,
otherwise,, check you warranty,,
I have the abit nf7-s,, no issues ,,
MCSE, MCP+I, A+
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