ASUS P7P55D-E Pro, High Pitched Buzz/Whistle

[undisputed565]

Just built my system over the weekend and my mobo has a subtle high pitched noise when it's idle that is loud enough to be annoying to me. The noise completely stops when I open a game, listen to music or watch a video. So pretty much after it boots I start up a game and minimize it to make the noise go away.

I'm afraid to RMA because I don't want my PC to be out of commission for so long only to end up getting another noisey board like I have heard has happened. Anyone else have this board?

 

[delluser1]

Working on a P7P55D Deluxe this weekend, I got a high pitched squeal as well, but only when I opened up Realtemp [scratches head]
Downloaded and used Coretemp, no noise.
After a bios upgrade I hit Realtemp again and the squeal was gone.

 

[undisputed565]

I found a fix, I turned off C-State technology and now its gone, hurray!