Samsung e700 taken apart and now can't put it together

hi every one, i have an e700 and i got a new cover for it, i took it apart and i came unstuck, i put it back together as i thought i did put it together propley. i put the battery back in and ........ then i ad a problem. i would turn it on and no display would come up, only the keyboard lights up. i do have a feeling its to do with the connectors (picture down below) i let u guys and girls see whats going on because im ripping my hair out!!!!!!
thanks people