CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
Shut down the computer through the Start menu.
Ensure that your computer and attached devices are turned off. If your computer and
attached devices did not automatically turn off when you shut down your computer,
turn them off now.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then
unplug it from the network wall jack.
Remove the cable cover, if it is attached.
Disconnect any telephone or telecommunication lines from the computer.
Disconnect your computer and all attached devices from their electrical outlets, and
then press the power button to ground the system board.
If your computer has the stand in the horizontal position, remove the stand.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
Remove the computer cover.
NOTICE: Before touching anything inside your computer, ground yourself by touching an
unpainted metal surface. While you work, periodically touch an unpainted metal surface to
dissipate any static electricity that could harm internal components.
Press the cover release button as shown in the illustration.
Slide the computer cover forward 1/2 inch (1 cm), or until it stops, and then raise
the cover.