I have this really high pitched whinning noise coming from my computer and it's really driving me insane. I have no idea where it's coming from. It's not any of the fans. I tried unplugging all the fans and the whine is still there. My best guess is the pump. I have a DD 12V pump. It is put on top of some of those packaging foam stuff. If it is the pump, it didn't use to be like this. What can I do to stop the whine?