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4. Loosen the two silver captive Torx screws on the heat sink (2), and then lift the heat sink out of the
computer (3).
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.
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.
To replace the heat sink, reverse the removal procedures.
Processor heat sink
To remove the heat sink:
1. Prepare the computer for disassembly (see
Preparing to disassemble the computer on page 33).
2. Remove the center access panel (see
Access panel on page 37).
3. If installed, remove the graphics heat sink (see
Graphics heat sink on page 61).
62 Chapter 5 Removal and Replacement Procedures All-in One (AIO) Chassis