CAUTION: To disconnect a network cable, first unplug the cable from your computer andthen unplug the cable from the network device.3. Disconnect all network cables from the computer.4. Disconnect your computer and all attached devices from their electrical outlets.5. Press and hold the power button while the computer is unplugged to ground the system board.6. Remove the cover.CAUTION: Before touching anything inside your computer, ground yourself by touching anunpainted 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 couldharm internal components.Turning Off Your ComputerCAUTION: To avoid losing data, save and close all open files and exit all open programs beforeyou turn off your computer.1. Shut down the operating system:• In Windows 8.1:– Using a touch-enabled device:a. Swipe in from the right edge of the screen, opening the Charms menu and selectSettings.b. Select the and then select Shut down.Or* On the Home screen, touch 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.Or* On the Home screen, click and then select Shut down.• In Windows 7:1. Click Start .2. Click Shut Down.or1. Click Start .6