Remove the keyboard. There are 3 locking tabs at the top of the keyboard, in the top cover, sticking out
over the edge of the keyboard. Press them toward the back of the machine with a small flat screwdriver.
Gently pry the keyboard up from the top. Be careful not to pop off any keycaps. There are small nibs
holding it in place on the sides, and they will resist removal. Be careful of the keyboard cable.
Keyboard locking tabs.