A tab on the upper left of the motherboard presses against protrusions in the frame, preventing the left edge from coming free.

Insert the tip of a spudger against the tab in the upper left corner of the motherboard. Wedge the spudger between the frame and the screen hinge.

Pry up on the tab with your spudger while you lift the right edge of the motherboard toward the front of the laptop.

If the motherboard can't lift over the left speaker, the tab may still be stuck. Change the angle of your spudger and try again.