My children have been playing games on my computer and have done something to it. I took it in to a PCdoctor place and they cleaned it and sold me a new power supply. Of course that has only helped the fan not to run at high all the time; it still has many problems. Slow startup, choppy/stuttering audio/video (took 4 hrs to watch a 2 hr movie), crashes, can't run multiple programs concurrently, Word and Excel take at least 2 min to start, to name a few. I've run a virus scan from TrendMicro which found nothing. I guess they could have downloaded something that has gummed up a driver. It's almost as though there is something running in the background sucking up the CPU. Aughhh!

Someone please help . . .