To install a new processor:
1.Place the processor in its socket and close the retainer.
2.Secure the locking lever.
If reusing the existing heat sink, go to step 3. If using a new heat sink, go to step 5.
3.If reusing the existing heat sink, apply the thermal grease provided in the spares kit to the top of the processor.
4.Clean the bottom of the heat sink with the provided alcohol pad and place it atop the processor.
5.If using a new heat sink, remove the protective covering from the bottom of the heat sink and place it in position atop the processor.
6.Secure the heat sink to the system board and system board tray with the four captive screws and attach the heat sink control cable to the system board.
CAUTION: Heat sink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly seat the heat sink 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.
NOTE: After installing a new processor onto the system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://h18000.www1.hp.com/support/files.
Processor 155