First off what type of CPU is it, if its anAMD, ur dad may have cracked the core. Other wise, make sure the HEatsink is properly attached, and there is thermal compound between the core and sink. Further make sure the fan is plugged in. If thats all proper, he may have bumped the vid card or ram, try reseating those. Do this with precation, esd, or static can cause damage to electronic components. Good Luck |Drew|