I didn't see any threads addressing this so obviously its not a common problem, but I get a constant buzzing sound starting with the opening logos(from the speakers not the pc). Then when I get to the menu it's a slightly different buzzing sound but still constant. It's not too loud but not subtle either and it's really annoying me. I've played around with the audio settings but haven't noticed any difference, and the buzzing starts even before the menu is loaded so I'm not really sure what the problem is. I have sony surround sound and have a pretty darn good new rig, and am playing on steam.

Any ideas?