Removing the cover
Important
Turn off the computer and wait 3 to 5 minutes to let the computer cool

before removing the computer cover.

This section provides instructions on how to remove the computer cover.
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down your
operating system, and turn off all attached devices and the computer.
2. Unplug all power cords from electrical outlets.
3. Disconnect the cables attached to the computer. This includes power cords,
input/output (I/O) cables, and any other cables that are connected to the
computer. See “Locating controls and connectors on the front of your
computer” on page 5 and “Locating connectors on the rear of your computer”
on page 6.
4. Remove any locking devices, such as a cable lock that secures the computer
cover.
5. If there are thumbscrews securing the cover, remove them.
12 Hardware Installation and Replacement Guide