HP ProLiant BL460c Maintenance And Service Manual page 43

CAUTION: Always install the processor parallel to the system board to avoid damage to the pins.
Close the processor retaining latch and the processor socket retaining bracket.
5.
Clean the old thermal grease from the heatsink and the top of the processor with the alcohol swab.
6.
Allow the alcohol to evaporate before continuing.
Removal and replacement procedures 43