HP Compaq NX7300 Maintenance And Service Manual page 147

Removal and Replacement Procedures
8. Flex the right side of the base enclosure 1 until the USB 2,
1394 3, and RJ-45 connectors 4 are clear of the
base enclosure.
9. Lift the front edge of the system board 5 until it rests at
an angle.
Releasing the System Board, Part 2
5–54 Maintenance and Service Guide