1. Unplug your PC and open its case. Position it so that you can comfortably reach into the case's interior. If you have a tower, you may find installing the RAM modules easier if you lay the case on its side. If you're upgrading the RAM on a notebook, look for an access panel on the bottom of the machine secured by one or two screws, and carefully remove that panel.
2. Protect your PC's delicate circuits from static electricity by properly grounding yourself. If you don't have a grounding strap, at least touch a metal faucet, pipe, or even your computer's case before touching the inside of your PC or any component.
3. Check your PC's documentation to identify the proper RAM sockets to fill. Remove any obstructions, such as power cables or plastic panels used to channel airflow over the motherboard.
4. If you need to remove an existing module, gently push down on the clips on either side of the RAM socket. The module will pop up slightly and should be easy to pull out.