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Setup and Quick Reference Guide 17
Opening the Computer Cover
CAUTION: Before performing any of the procedures in this section, follow the
safety instructions in the System Information Guide.
1
Shut down the computer through the Start menu.
2 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.
3
Disconnect any telephone or telecommunication lines from the computer.
4 Disconnect your computer and all attached devices from electrical outlets, and then
press the power button to ground the system board.
5 If you have installed a padlock through the padlock ring on the back panel, remove the
padlock.
CAUTION: To guard against electrical shock, always unplug your computer from
the electrical outlet before opening the cover.
6
Lay the computer on its side as shown in the illustration.
NOTICE: Ensure that sufficient space exists to accommodate the open cover—at least 30 cm
(1 ft) of desktop space.
7
Open the computer cover.
– For the mini-tower, push the buttons on both ends and lift the cover open.
– For the desktop, slide the cover release latch toward the power supply of the
computer. Raise the cover, and pivot it toward the front of the computer.