86 Appendixw w w . d e l l . c o m | s u p p o r t . d e l l . c o m 9 After the Microsoft Windows desktop appears on your computer, shut down the computerthrough the Start menu (see page 18).NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug itfrom the network wall jack.10 Turn off any attached devices and disconnect them from their electrical outlets.11 Disconnect the computer power cable from the wall outlet, and then press the power buttonto ground the system board.12 Remove the computer cover (see page 78).13 Remove the password jumper.Attach the jumper to only one pin so that you do not lose it.14 Replace the computer cover (see page 78).NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it intothe computer.15 Connect your computer and devices to electrical outlets, and turn them on.16 If you are prompted to press to continue, press .Replacing the BatteryCAUTION: Before you begin any of the procedures in this section, follow the safety instructionslocated in the Product Information Guide.CAUTION: To guard against electrical shock, always unplug your computer from the electrical outletbefore opening the cover.A coin-cell battery maintains computer configuration, date, and time information. The battery canlast several years.If you have to repeatedly reset time and date information after turning on the computer, replacethe battery.CAUTION: A new battery can explode if it is incorrectly installed. Replace the3-V CR2032 battery only with the same or equivalent type recommended by the manufacturer. Discardused batteries according to the manufacturer’s instructions.1 Record all the screens in system setup (see page 82) so that you can restore the correctsettings when your perform step 11.2 Shut down the computer through the Start menu (see page 18).NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug itfrom the network wall jack.3 Turn off any attached devices and disconnect them from their electrical outlets.4 Disconnect the computer power cable from the wall outlet, and then press the power buttonto ground the system board.