I'm helping a friend who is having trouble with his system freezing up (not blue screen, just freeze). It reboots fine after a freeze, but we are out of ideas, short of reinstalling all the software. The "repair" option with the XP install disk did not help. Neither did SP-1, although the frequency seemed to decline after installing SP-1. Somewhere I saw instructions on how to overwrite the XP system files without reformatting the hard drive. I remember you selected not to "repair" in the installation dialog, but then I've forgotten what other steps to take. Can anyone help us out here. Any other suggestions on what are the likely causes of random freezes would also be helpful.