HP Compaq nw8440, nc8430, nx8420 Notebook PCs - Maintenance and Service Guide

Removal and Replacement Procedures
Maintenance and Service Guide 5–57
4. Remove the following:
1 Two Torx T8M2.5×6.0 screws
2 Two Torx T8M2.5×4.0 screws
3 Two HM5.0×10.0 screw locks on each side of the external
monitor connector
Removing the System Board Screws and Screw Locks