HP ProBook 4430s, 4431s, 4330s and 4331s Notebook PCs - Maintenance and Service Guide

2. Disconnect the display cable (1) and webcam cable (2) from the system board.
3. Remove the two Phillips PM2.5×4.0 screws (1) that secure the system board to the base
enclosure.
4. Lift the optical drive connector latch (2), and then disconnect the optical drive cable (3).
Component replacement procedures 95