Hi, When I updated my graffic card I got black edges in css when playing on 800x600.. :(
How do I fix it, so I get full screen?

New drivers could fix it, or possibly some options in the gpu-control page :)

Turn off GPU scaling.

Turn of GPU Scaling, or keep it with black bars. It's better. It gives you the native resolution which your on. As opposed to before it would put 800x600, then make it bigger, which means it's not as clear, if you see what im saying.