Remove the following 15 screws:

• Fourteen 3 mm Phillips.

• One 5.5 mm Phillips in the upper left corner.

Lift the top shield up from the right side, minding the upper left corner, which may catch on the metal framework.

Remove the following 4 screws:

• One 3 mm Phillips in the channel between the optical drive and fan.

• Two 6 mm Phillips from either end of the drive bezel.

• One 6 mm Phillips with a collar from the bracket extending from the lower left corner of the drive.