Over the past month my computer has been emitting this high pitch whine. It's near-ultrasonic, like a dog whistle or something, but unfortunately very audible to me - and my brother. My wife thinks ...

I just rebuilt my PC intop an all acrylic case, anmd swapped in a new video card. Now, it;s all running great, except theses this high pitched whine in a morse code like pattern, just about all the ...