Originally Posted by dvanwag
No I havent tried using the stock cooler or any other one. The CPU Cooler I'm using has only one power cord for the two fans, is that what your referring too?
Yea. Although that might not be the problem it could be worth just connecting a single fan to the CPU fan header to see if this cures the fault. And as long as the motherboard is receiving power the blue LED will remain lit.
Are you plugging the CPU fan into the correct fan header? It's located between the S/PDIF connector and the VRM heatsink.
Ensure that you use the stand-off's when mounting the motherboard to the chassis.