Replacing the System Board | 79Replacing 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 11. After working inside your computer, follow the instructions in "AfterWorking Inside Your Computer" on page 13. For additional safety best practicesinformation, 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 the system setup after you replace the system board.Procedure1 Align the screw holes on the system board with the screw holes on themiddle cover.2 Replace the screws that secure the system board to the middle cover.3 Connect the disconnected cables to the system board.Postrequisites1 Replace the processor. See "Replacing the Processor" on page 56.2 Replace the processor heat-sink. See "Replacing the Processor Heat-Sink" onpage 54.3 Replace the wireless mini-card. See "Replacing the Wireless Mini-Card" on page 46.4 Replace the mSATA mini-card. See "Replacing the mSATA Mini-Card" on page 48.5 Replace the memory modules. See "Replacing the Memory Module(s)" on page 30.6 Follow the instructions from step 3 to step 7 in "Replacing the I/O Board" onpage 70.7 Replace the system-board shield. See "Replacing the System-Board Shield" onpage 32.8 Replace the I/O panel. See "Replacing the I/O Panel" on page 41.9 Replace the stand. See "Replacing the Stand" on page 22.10 Replace the trim cover. See "Replacing the Trim Cover" on page 20.11 Replace the back cover. See "Replacing the Back Cover" on page 18.12 Follow the instructions in "After Working Inside Your Computer" on page 13.
