New computer help

[Upham]

I just built my friend a new computer and everything is hooked up correctly and boots up ok. But when i try to install windows xp it starts the install fine, but then the system just shuts off, and wont come back on for like 5 minutes. now i am thinking it is a power supply problem, but he just got it, it is brand new. anyone know what could be causing this?

 

[RemyCanad]

If you could please list the specs of the system.

Could be a heat issue.

Also make sure the PSU is set to 115. If its set to 220 it might do something like that.