After you have removed all of the prerequisites its time to unscrew a few more screws. Flip your laptop over and first remove all the screw highlighted in red with the Phillips #00 screwdriver. These are 1/4" head diameter by 3/8" screw length screws.
Now remove the screws highlighted in orange with the Phillips #00 screwdriver. These are 5/32" head diameter by 5/32" screw length screws. Keep these separate from the other screws.