Specs? Mother Board name and number? Videocard name and number? Power supply name and number?Does the power supply turn on? Does the system try to load the operating system? Bad hard drive? If he got a new Mobo and he is using the old hard drive could there be a driver issue? If the computer at least boots up what are the temps? Something may have been DOA.
If I catch him on the xbox ill try to get more info
I'm back