High Pitch Noise Coming from P8P67 Pro Motherboard ?

BukToof

Distinguished
May 25, 2011
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Hello,

My Asus P8P67 Pro motherboard recently started making a very high pitch noise whenever the computer is powered off or in sleep more. Maybe I can’t hear the high pitch sound while the fans are on but it’s very noticeable when it’s off or in sleep mode.

At first I suspected it was coming from the PSU but to rule everything out, I began unplugging various components until the noise went away and upon unplugging the 24 pin ATX connector, the noise went away instantly.

Based on that I think it’s likely coming from the motherboard. What could be going wrong with my motherboard to cause this problem and is there any way to fix it?

Thanks for any suggestions.
 
Solution
try another psu for test since you unplug the motherboard it could be the psu you dont ask power from him so you could not tell if it is the board or the psu .