Frankly, the reduction of power supply capability would be a red flag. 350 Watt power supplies are for very lightly equiped AMD boxes (one drive, little ram, no 3D card, one CDROM, nothing else.)
You may want to take this issue up with your repair person. The hardware is suspect.
Hi, my computer is constantly restarting now. I am running Win XP behind a router. The computer was running fine until I decided to do a restart because I hadn't done one in quite some time. Once I restarted, now it just continues to restart automatically. It gets to the Win XP Pro screen and then just restarts itself. I swapped out the CPU and power supply and it's still doing the same thing. I don't think it Sasser because it doesn't get beyond the Windows splash screen and I'm behind a router. Does anyone have any ideas? I have an AMD XP 2200+ CPU (now an AMD 1200) and originally a 450W Power supply (now a 350W PS).