Hi, I'm on a dell M1530. My computer keeps shutting off, and I can't figure out why. It only seems to happen when I'm watching a movie or tv show online (in-browser, like megavideo), or if I'm playing a game.  I think it's my graphics card (NVIDIA GeForce 8400M GS), but i don't know. My computer is always very hot afterward. I'm getting a cooling pad to see if that will help. But just incase I wanted to see if anyone else had this problem, or if someone knows exactly how to fix it? Any info would be a great help! Thanks!