HP Compaq dx7300 MT Reference Manual page 96

Removal and Replacement Procedures— Microtower (MT) Chassis
When reinstalling the heatsink, make sure that its bottom has been cleaned with an alcohol wipe
and fresh thermal grease has been applied to the top of the processor.
Ä CAUTION: Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to
evenly seat the heatsink on the processor. This is especially important as the pins on the socket are very
fragile and any damage to them may require replacing the system board.
6–28 43361 1-001 Service Reference Guide, dx7300