HP EliteOne 800 G3 All-in-One Business PC - Maintenance & Service Guide

7. Lift the heat sink out of the computer.
CAUTION: To reduce a degradation in thermal performance, be sure not to touch the thermal grease
on the surface of the processor or the heat sink.
8. Discrete models:
Remove the VESA cover/fan assembly (VESA mounting bracket/fan assembly on page 43).
9. In the order indicated on the heat sink, loosen the captive Torx screws (1) from the heat sink component
that services the main processor.
CAUTION: Remove heat sink retaining screws in diagonally opposite pairs (as in an X) to even the
downward forces 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.
10. Remove the non-captive Torx screws (2) from the heat sink component that services the graphics
processor.
11. Remove the non-captive Torx screws from the brackets at the top of the heat sink (3).
36 Chapter 4 Removal and Replacement Procedures