NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.3. Disconnect any telephone, network, and USB cables from the computer.4. Disconnect your computer and all attached devices from their electrical outlets.5. Turn over the computer.NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer.6. Remove the battery.a.1 Slide the battery-bay latch release lock on the bottom of the computer...