Repeat steps 3-5 in reverse order.

The screen may have reattached itself, preventing you from completing step three (securing the motherboard). If so, repeat step 2 and then proceed to step 3.

You will need to lightly press down on the motherboard while screwing it in, or it will not make contact.

To reattach the screen, line it up to the metal outline and gently press it down. You may want to clean the screen with a cloth to remove any dust or fingerprints before proceeding to the next step.