Screen full of light and lines but no display

Ok so the my hard drive broke a while a go and i just got round to fixing it, the screen was working before hand as i was using unbuntu from a memory stick on the machine without this problem.

I was a little rough taking it apart as some screws were worn and the plastic casing wouldnt come off but i wasnt to rough that anything drastic would have happened as i kept taking care. but after replacing the hard drive and booting up the notebook all i get is a white screen with a blodge of black and lots of coloured lines, i looked into it and took it apart again, all connections on the MB seem fine. I'm only putting the back plastic case back on, not screwing it back on and some screws are attached to the hard drive holder and one through a socket connected to the screen (after some tracing)

anyway to test if it's just the screen or if its an actual wire??

or any advice? all's welcome!