System Board | 79Replacing the System BoardProcedure1 Replace the processor. See "Replacing the Processor" on page 87.2 Replace the heat sink. See "Replacing the Heat Sink" on page 83.3 Connect the power-adapter port cable to the system-board connector.4 Turn the system-board assembly over.5 Slide the connectors on the system-board assembly into the slots on the computerbase.6 Replace the screws that secure the system-board assembly to thecomputer base.7 Align the screw hole on the power-adapter port with the screw hole on thecomputer base.8 Replace the screw that secures the power-adapter port to thecomputer base.9 Connect the display cable, speakers cable, and LAN-USB cable to the connectorson the system board.10 Close the display and turn the computer over.11 Connect the subwoofer cable to the system-board connector.Postrequisites1 Replace the fan. See "Replacing the Fan" on page 482 Replace the palm rest. See "Replacing the Palm Rest" on page 41.3 Replace the wireless Mini-Card. See "Replacing the Wireless Mini-Card" on page 33.4 Replace the mSATA card. See "Replacing the mSATA Card" on page 37.5 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" onpage 29.6 Follow the instructions from step 4 to step 6 in "Replacing the Hard Drive(s)" onpage 26.7 Replace the memory module(s). See "Replacing the Memory Module(s)" on page 22.8 Replace the base cover. See "Replacing the Base Cover" on page 20.9 Replace the keyboard. See "Replacing the Keyboard" on page 18.10 Replace the battery. See "Replacing the Battery" on page 13.11 Follow the instructions in "After Working Inside Your Computer" on page 9.