I need help. My computer is stuttering. It seems if i leave it on for an hour the computer gets really choppy E.G. I move the mouse around and the cursor just disappears then reappears a few seconds later to where i moved the mouse. I also try to listen to music or watch video and it stutters every 5 seconds or so. But when i turn it off and on it goes back to normal P.S. The internet also does not work when the computer goes stuttery.