Good idea, I'll try to leave it in the BIOS overnight. As far as BIOS, no there's nothing that I'm familiar with.

I do see that the fan speed does coincide with the LEDs flashing, so I'm pretty sure it "thinks" the CPU is hot, even if the software indicates the temperature is not critical. Also, when the fans ramp up and the LEDs flash, the exhaust is "warm", however, that also is not abnormal (except for the flashing LEDs).