34 | Removing the System BoardRemoving the System BoardWARNING: Before working inside your computer, read the safety informationthat shipped with your computer and follow the steps in "Before You Begin" onpage 7. After working inside your computer, follow the instructions in "AfterWorking Inside Your Computer" on page 9. For additional safety bestpractices information, see the Regulatory Compliance Homepage atdell.com/regulatory_compliance.NOTE: Your computer’s Service Tag is stored in the system board. You must enterthe Service Tag in system setup after you replace the system board. For moreinformation, see "Entering the Service Tag in system setup" on page 37.NOTE: Before disconnecting the cables from the system board, note the locationof the connectors so that you can reconnect them correctly after you replace thesystem board.Prerequisites1 Remove the battery. See "Removing the Battery" on page 10.2 Follow the instructions from step 1 to step 2 in "Removing the Memory Module(s)"on page 12.3 Remove the hard-drive assembly. See "Removing the Hard-Drive Assembly" onpage 18.4 Remove the optical-drive assembly. See "Removing the Optical-Drive Assembly" onpage 15.5 Remove the keyboard. See "Removing the Keyboard" on page 21.6 Remove the palm-rest. See "Removing the Palm-Rest" on page 24.7 Remove the wireless mini-card. See "Removing the Wireless Mini-Card" onpage 28.