Hi, I have an HP computer that's about 9 years old. I've had a high pitched noise coming from the computer for about a year now. It's not the monitor or the dsl modem. I never hear this noise when I'm using the computers at the library, or if someone is using their laptop.

what's wrong with mine? Do I need a new one? How do i know the new one won't make this same noise?

thanks, diana