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.
Recommended Tools
The procedures in this document may require the following tools:
• Small flat-blade screwdriver
• #0 Phillips screwdriver
• #1 Phillips screwdriver
• Small plastic scribe
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 8:
* Using a touch-enabled device:
a. Swipe in from the right edge of the screen, opening the Charms menu and select Settings.
b. Select the and then select Shut down
* Using a mouse:
a. Point to upper-right corner of the screen and click Settings.
b. Click the and select Shut down.
– In Windows 7:
1. Click Start .
2. Click Shut Down.
or
1. Click Start .
8