Detach the five plastic clips holding the upper and lower halves of the laptop together. These can be undone by carefully running a plastic opening tool between the top and bottom casing. There will be an audible audible "click" as the clips come undone.

The top plastic is fragile. There are also two miniature LEDs exposed along the top edge of the bottom casing at the bottom right that are easily damaged.

Once the five clips have been undone, carefully remove the upper half of the laptop.