Again, take note of which screws go where.
Remove the 1 screw holding the
wireless card
(the small board in the front). Tilt the wireless card up
and remove it from its socket. You do not need to disconnect the antenna wires.
Remove the 1 screw holding the
mainboard
(the large board on the left).
Remove the 3 screws holding the
I/O card
(the narrow board on the right).
Slowly pull up the yellow tape holding the
speaker cable
(speedy separation = ESD hazard). Disconnect
the speaker cable (the one coming up from the front). It can be pretty tight. Rock it gently.
Main board, I/O board, and WIFI card screw locations, and speaker cable connector.