OK look closely at this. There are two ribbon cables that have to be reattached when you put it back together. One is that copper-colored one to the left (already reconnected) and the other is the white one with the blue tip. They both use an integrated clamp, that is opened and closed by sliding the gray portion of the connector away from the main body of the connector 1/16 of an inch or so. In this photo the clamp is open (clickety for large photo). Slide the ribbon as far as it will go into the connector and using two of your tiny screwdrivers, close the clamp so the gray portion is flush against the white. In this photo, the clamp with the blue-tip cable is open.