I built my computer back in late '05 so it's getting on up there in age. Here are some specs: OS: Windows XP Home Motherboard: MSI K8N Neo4F Processor: AMD Athlon 64+ 3000 RAM: Corsair ValueSelect (2x512) GPU: nVidia GeForce 6600GT PSU: Thermaltake 500W I just bought the PSU the other day because the problem has been going on for a couple of weeks now. It seemed like a PSU problem to me because I can be doing anything from playing games to surfing the web and the computer will shut down completely. It's almost like the power went out. Afterwards, the power light on the front flashes on and off until I turn off the switch on the PSU. I've tried disabling automatic restart on Windows failure, but I still don't see a blue screen. My temps, according to SpeedFan, are fine. The GPU idles around 60C (a little high, but nothing crazy). The CPU idles around 39C. I've checked the BIOS temperatures and it confirms these numbers. I haven't installed anything lately (that I can recall). I've done a virus scan to no avail. I had stupidly failed to clean out the inside of my computer for over a year and the dust bunnies had raided it, but I even cleaned it out to see if that would help anything. For over a year or so now, I've been getting this error at start up, something to the tune of "SQLDumper failed to initialize" or something like that, but it hasn't affected anything before. Should I try repairing Windows? I'm not sure what else to do. I don't feel like building a new desktop because I'll be getting a Laptop for graduation.