4.Locate the three silver case screws circled below. You may have to lift the stand to locate the middle case screw. Note: These screws are captive; they are part of the display/bezel assembly and cannot be removed.
Using the tool provided, or a Phillips #2 screwdriver, loosen the three captive screws. Turn the screws to the left until they stop turning. Don’t force the screws once they stop turning.
5.Holding the back cover by the metal stand, tilt the cover up and lift it off the computer. Set the back cover aside.