Turning Off Your Computer; After Working Inside Your Computer - Dell Vostro 2520 Owner's Manual

6. Close the display and turn the computer upside-down on a flat work surface.
NOTE: To avoid damaging the system board, you must remove the main battery before you service the
computer.
7. Remove the main battery.
8. Turn the computer top-side up.
9. Open the display.
10. Press the power button to ground the system board.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before
opening the display.
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

CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your
computer.
1. Shut down the operating system:
– In Windows 7:
Click Start
– In Windows Vista:
Click Start
click Shut Down.
– In Windows XP:
Click Start → Turn Off Computer → Turn Off . The computer turns off after the operating system shutdown
process is complete.
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.

After Working Inside Your Computer

After you complete any replacement procedure, ensure you connect any external devices, cards, and cables before
turning on your computer.
CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not
use batteries designed for other Dell computers.
1. Connect any external devices, such as a port replicator, battery slice, or media base, and replace any cards, such
as an ExpressCard.
2. Connect any telephone or network cables to your computer.
6
, then click Shut Down.
, then click the arrow in the lower-right corner of the Start menu as shown below, and then