I'm working on a computer that I think was the victim of a nasty power outtage, or a lightning strike, or something. The HD was toast, so I put a different one in and managed to get XP Pro installed, but it's not 100% fixed. The computer will run flawlessly for as long as two hours, and then suddenly will just restart. No BSOD, no error messages, no warning, just a "courtesy reboot" as we call them. Then the computer will continually reset itself like that, running only a few minutes each time. One possibility is that when XP was installed, various files, about 20 of them, refused to be copied - even to the swapped HD. I am inclined to think that the files must not have been that important because they were help files, etc for the most part, and the computer gives NO warning or explanation for its reboots. To me it sounds like bad memory. I would really appreciate any thoughts or advice about this one... Thanks guys!