I have had a similar problem but it shuts off at random times, usually when I am doing many things at once, probably to many things at once. So downloaded the Speed fan to check out my whole deal, Holy crap it is reading 81 C, and I'm not even doing anything really at this moment, what am I suppossed to do to fix this. I know getting hot and shutting off can not be a good thing to keep letting happen to my computer. Help!!!