I have a laptop from a few years ago that one day decided it didn't want to stay on for longer than 5 minutes. I am thinking it is overheating. I have looked under it while it is on and noticed that the cooling fan just isn't spinning that fast. But what causes this? And can it be replaced? My nephew has a gaming Alienware laptop that is doing almost the exact same thing to him. While I went and built a PC to use, and stuffed my laptop in a closet, he doesn't really have anything else. So now I'm wondering if this is something that can be fixed, by myself, or maybe gaming laptops are not even worth the trouble. Certainly will be the last time I ever waste money on one. :-/ Any, um... advice?