These steps can help you out which I too followed from HP.com
Before you begin: Remove the battery, modular bay device, fixed optical drive, hard disk drive, LED cover, keyboard, heat sink, display panel, top cover, intake fan, PC card assembly, charger board, audio board, and modular bay cage.
Open the port cover on the rear of the notebook.
Use a 5 mm hex driver to remove the four 5 mm x 13.5 mm hex nuts that secure the system board to the base enclosure.
Remove the two silver 8 mm Phillips-head screws that secure the left display panel support to the base enclosure.
Remove the left display panel support.
Remove the two silver 8 mm Phillips-head screws that secure the right display panel support to the base enclosure.
Note: These two screws also secure a metal shield to the base enclosure.
Remove the metal shield from the system board.
Remove the right display panel support.
Lift the front edge of the system board until it clears the base enclosure.
Important! There is a Mylar film under the system board. Do not remove this film when removing the system board.
Slide the system board forward and remove.
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Meagan Shoults -
IT Support Los Angeles