I have had an ongoing problem with a new PC i have purchased about six months ago. To begin with the PC would consistently loop on a reboot up to 6-7 times before loading the OS. I had the PSU, RAM & motherboard replaced at the time of the rpoblem and it seemed to fix the problem. 6 months later I now appear to have a different problem in that I get an error message when I first boot the PC saying that the windows/system32/config/system file had been rewritten and the only thing I can do is reboot. I noticed just before this happened that task manager was frequently saying that the CPU is trying to use more thn 100% resources or something similar. I have tried reformatting and reinstalling Windows XP 3 times and everytime it appears to be okay for a couple of days and than the same problem rears its ugly head! This is a extremely bare PC with only hardware drivers, anti-virus/firewall, windows updates and office installed. I have tried swapping the RAM & PSU but still no go. I think I have it down to CPU or motherboard but I would love a second opinion.