164 Removing and Installing PartsInstalling the System Board1 Gently align the board into the chassis and slide it toward the back of thecomputer.2 Using the eight screws, secure the system board to the chassis.3 Replace the cables that you removed from the system board.4 Replace the processor and the heat sink assembly (see "Installing theProcessor" on page 148).NOTICE: Ensure that the heat sink assembly is correctly seated and secure.5 Replace the memory modules into the memory sockets at the samelocations from which you removed them (see "Installing Memory" onpage 109).6 Replace any add-in cards on the system board.7 Replace the computer cover (see "Replacing the Computer Cover" onpage 164).8 Connect your computer and devices to an electrical outlet, and turnthem on.9 Verify that the computer works correctly by running the Dell Diagnostics(see "Dell Diagnostics" on page 80).Replacing the Computer CoverCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions located in the Product Information Guide.1 Ensure that all cables are connected, and fold cables out of the way.2 Ensure that no tools or extra parts are left inside the computer.3 Align the tabs at the bottom of the computer cover with the slots locatedalong the edge of the computer.4 Press the computer cover down and slide it towards the front of thecomputer until you feel a click or feel the computer cover securelyinstalled.5 Ensure that the cover is seated correctly.
