3. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions.4. Disconnect any telephone or network cables from the computer.5. Close the display and turn the computer upside down on a flat work surface.6. Disconnect your computer and all attached devices from their electrical outlets, slide and hold the battery-bay latch release on the bottom of thecomputer and remove the battery from the bay, and then press the power button to ground the system board.7. Slide and hold the battery-bay latch release on the bottom of the computer, and then remove the battery from the bay.8. Remove any installed PC Cards or blanks from the PC Card slot.9. Remove the Secure Digital memory card, if installed, from the Secure Digital memory slot.10. Remove any installed modules.11. Remove the hard drive.Computer OrientationNOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer.1 battery latch release1 front2 left3 back4 right