Figure 29. Removing the System Board1. screws (8)2. system boardInstalling The System BoardCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.CAUTION: If you are using the Trusted Program Module (TPM) with an encryption key, you may be prompted tocreate a recovery key during program or system setup. Be sure to create and safely store this recovery key. If youreplace this system board, you must supply the recovery key when you restart your system or program before youcan access the encrypted data on your hard drives.1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet andperipherals.2. Lay the system on its side, on a flat and stable surface.3. Unpack the new system board assembly.CAUTION: Do not lift the system board assembly by grasping any components.4. Lower the system board into the chassis.5. Push the system board towards the back of the chassis until the system board clicks into place.6. Secure the system board to the chassis using the eight screws.NOTE: It is recommended that you install screws from diagonally opposite corners.7. Install the following:a) heat-sink assembly and processorb) memory modulesc) expansion cardsd) system fan61