Installing the antenna cover1 Replace the antenna cover on the display assembly.2 Turn the display hinges to the normal position.3 Install the:a Display assemblyb WLAN cardc Batteryd Base cover4 Follow the procedures in After Working Inside Your Computer.System boardRemoving the System Board1 Follow the procedures in Before Working Inside Your Computer.2 Remove the:a base coverb batteryc fansd heatsink assemblye WLANf hard drive (optional)g keyboardh SSDi memory modulesNOTE: Your computer’s Service Tag is located under the system badge flap. You must enter the Service Tag in the BIOSafter you replace the system board.NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can re-connect them correctly after you replace the system board.3 To remove the system board:a Lift the latch and disconnect the touchpad cable [1].b Lift the latch and disconnect the keyboard controller board cable [2].c Disconnect the power connector port cable from the system board [3].d Disconnect the speaker cable from the connector from the system board [4].e Peel the adhesive tape and lift the latch to remove the fingerprint cable [5]f Lift the plastic lever and disconnect the display touchscreen cable [6]g Peel the adhesive tape to release the touch screen cable.38 Disassembly and reassembly