Here is the removed keyboard. The arrows point to double sided tape, bane of Computer Techs everywhere. It is important to use gentle, constant pressure when dealing with adhesives, otherwise you can bend or even break the keyboard.

The sliver backing you see is the backlighting mechanism for the keyboard in the G73.

Second picture. The black arrow points to the cable for the backlight. Be careful with these type of cables, they are easy to break. The red arrows indicate the retention mechanism. Push them towards the cable to release it.

Third picture. This is the data cable for the keyboard itself. Release it the same way as the backlight cable.