Computer shuts down 2 seconds after being powered on
 

Original hardware:CPU: Athlon XP 2200+MB: ASRock K7VM3PSU: ATX 375WMemory: 2x 512MB DDR 266OS: Windows XP MCE SP2After working flawlessly for a very long time, I started experiencing computer shutdowns everytime I plugged in USB devices that used the USB port as the power source (iPod Touch...