|Last good config would seem worthwhile, or even System Restore.|
However, this won't help if you have a hardware fault. If you can try an external monitor that would be the best first step, just in case it is a screen fault.
The resolution should match your screen, although if this is wrong it doesn't usually produce borders.
Also let us know if any errors show in "Device Manager > Display Adapters".
Always pop back and let us know the outcome - thanks
message edited by Derek