HP ProBook 4410s Maintenance And Service Manual page 114

Remove the processor:
1. Position the computer right-side up with the front toward you.
2. Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn counterclockwise
until you hear a click.
3. Lift the processor (2) straight up and remove it.
NOTE:
with the triangle (4) embossed on the processor socket.
Reverse this procedure to install the processor.
104 Chapter 4 Removal and replacement procedures
When you install the processor, the gold triangle (3) on the processor must be aligned