HP 2000-216 Maintenance And Service Manual page 196

Removal and Replacement Procedures
✎
The following note applies only to computer models using
AMD processors:
The thermal pads should be thoroughly cleaned from the surfaces
of the fan/heat sink assembly 1 and 2, video memory chip 3,
and processor 4 each time the fan/heat sink assembly is removed.
Thermal pads should be installed on all surfaces before the
fan/heat sink assembly is reinstalled. Thermal pads are included
with all fan/heat sink assembly, system board, and processor
spare part kits.
Replacing the Thernal Pads
Maintenance and Service Guide 5–83