Attention: Touch the bare metal frame of the system to dissipate any static electricity from your body (do not touch any of the components inside the frame until you have done this). Do not touch any component(s) with a voltage warning label.
Disconnect the system unit power cord.
Remove the 4 screws at the back of the tower.
Insert a screwdriver under one of the tabs on the back of the cover and gently pry the tower cover so that it separates from the tower.
Slide the cover back about half inch (or 1.25 centimeters).
Lift the cover up by the top front and back edges, pulling the sides out and away from the tower.
Note To prevent the tower from tipping over, you may want to lay the tower on its side on a work surface, such as a table.
To replace the tower cover, lower the cover down over the tower, pressing in on the sides so the hooks inside the cover fit over the bottom ledge of the tower. Slide the cover forward into place. Secure the tower cover by replacing the screws you removed.
Attention: When you replace the cover, there are hooks inside the cover that help fit it to the tower.