HP Pavilion DV7-1023 Maintenance And Service Manual page 106

Remove the system board:
1. Disconnect the following cables:
(1) USB board cable
(2) Audio/infrared board cable
(3) Modem module cable
(4) Fan cable
(5) Subwoofer cable
2. Remove the four Phillips PM2.5×4.0 screws that secure the system board to the base enclosure.
3. Use the optical drive connector (1) to lift the system board (2) until it rests at an angle.
4. Disconnect the power connector cable (3) from the system board.
96 Chapter 4 Removal and replacement procedures