I went on a business trip out to California, and while out there my desktop started having problems. I do not know if it is something the kids installed or if it is hardware related. At first I thought it was something installed, because that is usually what the problem turns out to be. But the particulars of the symptoms seem more hardware related, but so far everything I know how to check has turned out ok there as well. Windows XP SP2. The error message we find in the System event viewer is Event 1003 (not paired with a 1001): Error code 1000007f, parameter1 00000008, parameter2 80042000, parameter3 00000000, parameter4 00000000. The symptoms are that the machine will either flash a BSOD or will simply go black and try to reboot. 90% of the time when this happens, the machine will not even make it to the BIOS check-- it will just sit there, screen black, with the drive crunching-- for about an hour. If I unplug it, after about an hour it will boot or if I don't unplug it, it will eventually boot (generally after about an hour of spinning its wheels). I have attached a zip file with minidumps. Can someone with more skill in this area help me try to figure out what the problem is so I know what to fix? Thanks!