Mac Pro Randomly Restarts I have a MacPro from Early 2007, and it will restart and at random times. It's not even at times where I'm doing something graphically, RAM-wise, or processor-wise intensive. Does anyone have any suggestions as to what I could do to isolate the problem?
You might want to start with the Apple Hardware Test:

http://support.apple.com/kb/HT1509?viewlocale=en_US&amp;locale=en_US