Replacing 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.Procedure1 Connect the power-adapter port cable to the system board.2 Turn the system board over.3 Slide the ports on the system board into the slots on the palm rest andplace the system board on the palm rest.4 Align the screw holes on the system board with the screw holes on thepalm rest.5 Replace the screws that secure the system board to the palm rest.6 Connect the hard-drive cable and speaker cable to the system board.7 Turn the computer over and open the display.8 Slide the status-light board cable and touchpad cable into the respectiveconnectors and press down on the latches to secure the cables.Post-requisites1 Replace the heat sink.2 Replace the wireless card.3 Replace the memory module(s).4 Replace the base frame.5 Replace the keyboard.66