Gateway GM5407H Guide page 58

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4
Loosen the four captive screws that secure the heat sink
and fan assembly to the system board, then remove the
assembly and place it on a stable surface with the flat
surface of the heat sink (the side with the thermal
grease) up. (The four screws cannot be completely
removed.)
5
Push the processor release lever down, lift it completely
up, then lift the processor retention bracket.
6
Remove the processor from the system board.
7
Install the new processor onto the system board. Make
sure that Pin 1 on the processor (indicated by the
silk-screened arrow on the corner of the processor)
aligns with Pin 1 on the processor socket (indicated by
the absence of a pin hole in the processor socket), then
return the retention bracket and lever to their locked
position.
52
CHAPTER 4: Upgrading Your Computer
Screws (only one shown)