Removing the System Board | 41Removing the System BoardWARNING: Before working inside your computer, read the safety informationthat shipped with your computer and follow the steps in "Before Working InsideYour Computer" on page 7. After working inside your computer, follow theinstructions in "After Working Inside Your Computer" on page 9. For moresafety best practices, see the Regulatory Compliance home page 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.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 Remove the memory modules. See "Removing the Memory Module(s)" on page 13.3 Remove the optical-drive assembly. See "Removing the Optical Drive" on page 16.4 Remove the hard-drive assembly. See "Removing the Hard Drive" on page 19.5 Remove the keyboard. See "Removing the Keyboard" on page 22.6 Remove the base cover. See "Removing the Base Cover" on page 27.7 Remove the wireless card. See "Removing the Wireless Card" on page 32.8 Remove the USB board. See "Removing the USB Board" on page 37.9 Remove the cooling assembly. See "Removing the Cooling Assembly" on page 34.10 Remove the coin-cell battery. See "Removing the Coin-Cell Battery" on page 30.