Video cable Alienware 15 r7

Hi all,

This is a bit of a long one but I would really appreciate some advice, it may be a common error or something I'm just doing wrong!

My dog pulled my Alienware 15 r7 off the table (got foot caught in wire) and bent one of the hinges quite badly. I ordered the new hinge and fitted it no problem. Turned laptop back on, no dispolay at all. So I though maybe I damaged the screen taking it apart. I ordered a new screen which had the same problem. Next I orderd a new video cable. I fitted it and the screen finally came on, as soon as I tried to shut the laptop, the screen went off again. Moving the hinges seems to affect the cable, flickering off and on etc. Maybe a faulty wire? I tried a second new wire and had the same problem.

I clipped the wire in all the way round the correct route, nothing sticking out or getting caught. I'm at a loss as this is a good laptop and everything else works finw.

Any ideas or things I can try?

Many thanks

Demi