I have an e-machines M6809 computer and it shuts down unexpectedly from time to time. IT is about 3 years old. Last year I put new thermal compound between the AMD Athlon 64 processor and the heat sink and it seemed to help for a time. (Maybe it was my imagination) Now it shuts down more frequently but I haven't re-applied new thermal compound. I'm not sure if that was the problem. Does anybody have information and a solution to this problem. I think it happens more frequently when the computer is on battery power, but it's hard to tell because it happens even when plugged in.