Next steps1 Install the power supply units.2 Follow the procedures in After working inside your systemSystem boardRemoving the system boardPrerequisitesCAUTION: If you are using the Trusted Platform Module (TPM) with an encryption key, you may be prompted to create arecovery key during program or System Setup. Be sure to create and safely store this recovery key. If you replace this systemboard, you must supply the recovery key when you restart your system or program before you can access the encrypted data onyour drives.1 Follow the safety guidelines listed in Safety instructions2 Follow the procedures in Before working inside your system3 Remove the following components:a Air shroudb Memory Modulesc Disconnect the fan cabled Expansion card risere Storage controller cardf Heat sink and processorCAUTION: To prevent damage to the processor socket when replacing a faulty system board, ensure thatyou cover the processor socket with the processor dust cover.g Internal USB, if installedh If applicable, Internal Dual SD moduleSteps1 Disconnect all the cables from the system board.CAUTION: Take care not to damage the system identification button while removing the system board from the system.CAUTION: Do not lift the system board by holding a memory module, processor, or other components.2 Using a Phillips #2 screwdriver, remove the screws securing the system board to the chassis.90 Disassembly and reassembly