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CAUTION:
To disconnect a network cable, first unplug the cable from your computer and then unplug the
cable from the network device.
5. Disconnect all network cables from the computer.
6. Disconnect your computer and all attached devices from their electrical outlets.
7. Turn the computer upside-down on a flat work surface.
NOTE:
Ensure to close the display if the system is a laptop. To avoid damaging the system board, remove the main
battery before you service the computer.
8. Remove the main battery.
9. Turn the computer top-side up.
NOTE:
Open the display if the system is a laptop.
10. Press the power button to ground the system board.
CAUTION:
Before touching anything inside your computer, ground yourself by touching an unpainted metal
surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted
metal surface to dissipate static electricity, which could harm internal components.
11. Remove any installed ExpressCards or Smart Cards from the appropriate slots.
Turning off your computer
Turning off your computer — Windows 7
CAUTION:
To avoid losing data, save and close all open files and exit all open programs before you turn off your
computer.
1. Click Start.
2. Click Shut Down.
NOTE:
Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not
automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds
to turn them off.
Turning off your computer — Windows 8
CAUTION:
To avoid losing data, save and close all open files and exit all open programs before you turn off your
computer.
1. Turning off your computer:
● In Windows 8 (using a touch enabled device):
a. Swipe in from the right edge of the screen, opening the Charms menu and select Settings.
b. Tap
and then tap Shut down
● In Windows 8 (using a mouse):
a. Point to upper-right corner of the screen and click Settings.
b. Click
and then click Shut down.
2. Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not
automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds to
turn them off.
10
Working on your computer
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