HP 6720s Maintenance And Service Manual page 79

Remove the processor:
Turn the system board upside down, with the USB connectors toward you.
1.
Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn counterclockwise
2.
until you hear a click.
Lift the processor (2) straight up and remove it.
3.
NOTE: When you install the processor, the gold triangle (3) on the processor must be aligned with
the triangle (4) embossed on the processor slot.
Reverse this procedure to install the processor.
Component replacement procedures 71