Gateway GT5448E - GT - 2 GB RAM Reference Manual page 56

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CHAPTER 4: Upgrading Your Computer
Loosen the four screws that secure the heat sink to the
system board, then remove the heat sink and place it
on a stable surface with the flat surface of the heat sink
(the side with the thermal grease) up.
Release the processor by pushing down on the lever,
and then lifting it completely up.
Remove the processor from the system board.
Install the new processor onto the system board making
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 lever to its locked position.
Screws