You will need a complete upper assembly - screen, cables, camera, surround, back cover.   Try parts-people.com to see what they have in terms of availability.  It appears the link below is what you need, but you can verify compatibility with your service tag. [URL]
Does anyone know if it is possible to upgrade the screen and camera for a 7390? I have a FHD non-touch, with the standard camera, and would like to upgrade to touch & IR camera. If it's possible, does anyone have appox. cost and Dell part numbers? Many Thanks,
Camera and screen upgrades for 7390