Flip the laptop right side up and open the clamshell.

Starting at the bottom right corner, slide the opening tool into the crevice between the blue and silver panels.

Carefully pry the top casing up around the edges, moving counterclockwise.

Keep the tool steady throughout, as prying in a rough manner can break the casing.

You will hear audible clicking sounds as the clips connecting the two halves disconnect from each other.