Power down the laptop and disconnect it from the charger.

Flip your laptop over so the bottom is facing up.

Use a JIS screwdriver to remove the ten screws from the bottom case.

Use an opening tool to carefully pry off the back case. Move around the edges of the laptop to release the tabs securing the top and bottom halves of the device.

If the tabs reconnect, insert opening picks between the two halves to keep them separated while you continue prying the rest of the bottom case.