Follow the procedures in Before Working Inside Your Computer.
Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
Turn off your computer (see Turning Off Your Computer).
Remove the:
a. battery
b. base cover
c. keyboard trim
d. keyboard
e. optical drive
f. hard drive
g. palmrest
Disconnect the switch-board cable from the system board and remove it from the latches. Remove the screws that secure the switch board to the computer and remove it from the computer.
Installing the Switch Board:
Align the switch board to its original position on the computer.
Tighten the screws to secure the switch board to the computer.
Connect the switch-board cable to the system board and secure it through the routing channel.
Install the:
palmrest
hard drive
optical drive
keyboard
keyboard trim
base cover
battery
Follow the procedures in After Working Inside Your Computer:
Connect your computer and all attached devices to their electrical outlets.
Turn on your computer.