replaced M1330 screen displays colored vertical lines

I recently replaced the LED screen for my M1330,
with a screen I bought from eBay.
(I fell on my laptop and the screen was completely broken)

I installed it, but exactly 1/4th of the screen displays vertical colored lines.


Maybe there was some cable that wasn't connected perfectly,
so I disassembled everything and blew on every piece to make sure there wasn't any dirt on it, and then assembled it again.

The colors changed a little bit, but the same problem occurs.

Idea, anyone?
If it's a cable problem, is it the GX081 cable I need?

 

Woah, that's trippy
That actually resembles what the screen should look like if you have a dying Nvidia 8400 lol (except it should be the colored vertical lines for the entire screen).

Also, is it just me (from that picture) or is there a bulge in the center of your keyboard..?

 

If I connect an external screen, the image is perfectly fine.
That means there's nothing wrong with the graph card, right?

And yeah it looks like that on the pic but I think it's because of my phone lens