Put backlight board on it's place and screw it back.

Put back outer cover and screw it back. Remember about 4 little screws.

Re-assemble the controller board and PSU. Put the controller board first, then the PSU. Screw in all the screws. Remember about power connector screws.

Put controller board in the shield back on the panel. Remember to correctly place backlight tape so it faces the connector.

Plug in all connectors. USB and the front panel. Plug backlight tape back. Screw the controller and PSU back with screws.

Re-install back cover.