To remove the memory module, flip the laptop over and remove the 8 screws from the base cover. Pry the cover from the recess points near the hinges.
Identify the memory module. Depending on the system, there might be more than one. Unlatch the module and grasp the edges to remove it.
To reinstall the memory module, realign the notch with the tab. Place the module back in the correct spot and secure the base cover.