HP nc4000 - Notebook PC Maintenance And Service Manual page 100

4. Remove the heat sink and fan (Section 5.10).
5. Use a flat-bladed tool to turn the processor locking screw
one-quarter turn counterclockwise 1.
6. Lift the processor straight up 2 and remove it.
✎
Note that the gold triangle 3 should be in the lower right corner
when installing the processor.
Removing the Processor
Reverse the above procedure to install the processor.
Maintenance and Service Guide
Removal and Replacement Procedures
5–27