this has happened three times in the past couple of days and I have no idea how... basically my computer starts to "jerk." for example my mp3s and videos would (while playing) stop, then continue, then stop again then continue again. even my mouse. if I move it around I could notice that it would stop then move again. basically everything in the computer does it. that's about all the information I could give as I'm basically a computer newb. thanks for any help anyone could give.