NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
NOTICE: When you disconnect a cable, pull on its connector or on its
NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer.
1.Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.
2.Turn off your computer (see Turning Off Your Computer).
3.If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
4. Disconnect all telephone or network cables from the computer.
NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer.
5.Disconnect your computer and all attached devices from their electrical outlets.
6.Close the display and turn the computer
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2 
main battery 
7.Remove the main battery:
a.Slide the
b.Remove the battery from the battery bay.
8.Open the display.
9.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.
NOTICE: 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.
10.Remove any installed PC Cards from the PC Card slot.
11.Remove any installed modules, including a second battery, if installed.
12.Remove the hard drive (Removing the Hard Drive).