ABIT AV8 K8T800pro athlon64 3500+ 2x1024 supertalent ddr400 HIS 9600pro family 256mb antec 420w PSU acer 22" LCD monitor model p224w windows xp pro sp3 fully updated My moms computer just reboots itself occasionally. Not during any one particular activity, just whenever. She doesn't do anything real graphically intense and doesn't really do much multi-tasking either. Because her old computer also did this rebooting thing, I have suspicions about the monitor. It could also be the PSU, although I replaced that (with a used one) when I built her new rig. I replaced everything except HD, CD-drive, and floppy-drive. I suppose it's possible that the old PSU was faulty, and the new used one is also faulty in the same manner. I'd love to hear some other ideas. Thanks.