If he still has his (OS disk), the windows xp installation disk, then he can re-install his windows and that should fix it.

You could also try booting into rescue mode from the install CD and see if you can fix it from there. Might be less painful than a full reinstall.

Also- where exactly in the boot process does it go bluescreen? Depending on the severity of the improper shutdown (a power outage, for example), there might have been some physical damage to some component of the system.

I assume it's right when you are suppost to see the Windows XP Welcome/user log-in screen that the screen just turns blue.

OK- have you tried booting into rescue mode from the install CD yet?

I haven't yet I will as soon as possible

OK, let us know what happens and we'll take it from there.