Soz hun only just saw this post

The 3 pin PWR_FAN connectors on your MOBO supply power TO your fans. They use 2 of the pins for that. The third pin is to monitor fan speed. Some PSUs often have a connector with 3 pins but only one wire to supply the MOBO with PSU fan speed info. NO power should ever be INPUT to the PWR_FAN connectors.
CPU fan needs to come off the MOBO and run your system fans either from the power supply using 4 pin molex connectors, SYS_FAN or PWR_FAN.

Cindy X

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