Compaq Presario CQ35-100 - Notebook PC Maintenance And Service Manual page 78

Removal and replacement procedures
Remove the system board:
1. Disconnect the following cables from the system board:
1 LED board cable
2 Bluetooth module cable
3 Audio board cable
2. Remove the two Phillips PM2.5×4.0 screws that secure the system board to the base enclosure.
4–42 Maintenance and Service Guide