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.