To remove the memory module, remove the two screws on the base cover to slide and lift the cover off the system. Unlatch the front bezel to remove it. Identify the hard drive assembly and disconnect the cables. Remove the two screws and lift the assembly out of the system.
Find the disk drive cage and remove the screws securing it. Unlatch and disconnect the cables to lift the cage out of the system. Identify and unlatch the memory module to remove it from the system.
To reinstall the memory module, re-latch it back to the system. Place the disk drive cage in the system and reconnect the cables. Re latch and install the screw to secure it. Place the hard drive assembly back in the system. Tighten the two screws and reconnect the cables to secure it. Re-latch the front bezel to the system and secure the base cover with the two screws.