So if i go on dark games or dark pages(like games that are dark not light).
There are lines going up and down, the pictures arent moving is just like a background, i use a dvi to vga adapter, could this be a problem that i didnt put the connector fully
Possibly a bad connecter but there are other things that can do this. One is MF interference so try degaussing the screen and make sure you have the latest video drivers for your graphics card.
Also make sure you have the latest version of pretty much everything :) (Windows updates, Java , Flash Player and DirectX to name a few).