Windows XP ASUS A8N SLI-Premium AMD Athlon 64 400G hardrive 2G ram Raedon HD4890 700W Kingswin PSU Rig is about 4 years old now, I just added the PSU and video card about a month ago. I woke up three days ago with the Mobo beeping every couple of minutes. Initially, thought it was the smoke alarm, but it seems like the computer was just rebooting itself in an infinite loop... I can turn it on, POST completes without a problem, then I get the "Windows did not successfully shutdown...." with the typical options, boot in safe mode, safe mode with networking, safe mode with command prompt, last known good config, or boot normally. No matter what option is selected, the Windows splash screen appears for half a second, and then the system just restarts itself. What I've tried so far: Clearing CMOS Removing mobo battery Removing non-essential components Removing USB peripherals/devices I assume my next step is to boot from a CD and reformat the hard drive. However, seeing as how I'm at college and don't have a handy windows CD, I figured I would ask if there was anything I could do in the mean time... Any help is appreciated.