High Pitch Noise Motherboard - Caused by Chassis/CPU Fan Connectors

betajosh711

Reputable
Jun 27, 2014
2
0
4,520
Hello i'm encountering a high pitch noise coming from the motherboard, i've isolated that its coming from the CPU Area.

i have an Asus M5A97 r2.0, and i've realised that when i unplug one of the chassis fans the noise goes away.
doesn't matter which fan as long as i unplug one the noise goes away, and no matter which combination i plug the noise comes back.
my cpu fan is 4 pin
and i'm running a 700w PSU.

Q-Fan settings don't change anything other than the audible fan noise itself. I am assuming it is something related to voltage regulation?

When i use the asus ai suite tool to change the fan speed, the noise changes pitch. (It is NOT a sound from the fan itself)
 

bretmh

Honorable
Nov 28, 2012
95
0
10,640
Could the fan be hitting a power connection? Maybe a blade is chipped, something is in the way of it more than likely.

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