I have a Dell Optiplex 980 on my desk at work. It outputs a high-pitched whine from the speaker-out. It's not that loud, but naturally it gets amplified when I turn up the volume on my amp. It's most ...

For some reason, a high pitched sound seems to come from my case when I run Spellforce 2. I'm not sure where the sound is coming from, but I've unplugged both case fans. There are only two fans left, ...