Removing the system boardWARNING: Before working inside your computer, read the safetyinformation that shipped with your computer and follow the steps inBefore working inside your computer. After working inside yourcomputer, follow the instructions in After working inside yourcomputer. For more safety best practices, see the RegulatoryCompliance home page at dell.com/regulatory_compliance.NOTE: Your computer’s Service Tag is stored in the system board. Youmust enter the Service Tag in the BIOS setup program after you replacethe system board.NOTE: Replacing the system board removes any changes you havemade to the BIOS using the BIOS setup program. You must make thedesired changes again after you replace the system board.NOTE: Before disconnecting the cables from the system board, note thelocation of the connectors so that you can reconnect them correctlyafter you replace the system board.Prerequisites1 Remove the battery.2 Remove the optical drive.3 Remove the base cover.4 Remove the hard drive.5 Remove the wireless card.6 Remove the keyboard.7 Follow the procedure from step 1 to step 7 in ”Removing the computerbase".8 Remove the I/O board.Procedure1 Turn the computer over and open the display.2 Disconnect the power-button board cable from the system board.64
