all right, i bought a new motherboard and processor, plus a new tower with power supply to go with it. i plugged everything into it just fine, but when i start it up, windows xp tries to start up, then goes to the blue error screen. when i try again, it says something about overheating. what do i to fix that? if worse comes to worse, i might still get free installation from compusa, but i'd rather not leave my comp for a week or two. any help would be appreciated.