I have had this weird issue for a month now. I sometimes have trouble trying to initiate the PC to work. It has XP on it. When it boots it loads the progress bar then a power failure occurs. Sometimes it takes a longer time to restart (i.e: I type in my username and password) then it restarts. I noticed that the power supply's fan is not working. So is it the issue of a power supply fault?
regards, ~Abed