HP Pavilion DV4-2155 Maintenance And Service Manual page 102

Removal and replacement procedures
Remove the processor:
1. Use a flat-bladed screwdriver to turn the processor locking screw 1 one half-turn counterclockwise until you
hear a click.
2. Lift the processor 2 straight up and remove it.
✎
When installing the processor, align the gold triangle 3 on the processor must be aligned with the
triangle 4 embossed on the processor socket.
Reverse this procedure to install the processor.
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