USB Restart

[GrimReaper23]

I just built my brother a computer and he said that once he puts in the controller for his ps3 so he could get it charged the computer just shutsdown/restart. Anyone have any clue what could cause this problem? He has..

AMD 6400+
Gigabyte GA-M61P-S3 AM2 NVIDIA GeForce 6100 Motherboard
2 gbs of Crucial Ballistix Ram DDR2 1066

 

[GrimReaper23]

ohh i forgot to mention that he has the OCZ 600 watt stealth psu.