I don't know if this is a Graphics issue on my PC but I have an Nvidia 440mx and When I run fullscreen with openGL the game has about 5% of the left side off the screen cut off.

I think is the monitor frequency (I'm almost sure).
This happens because when you go fullscreen the screen vertical refresh changes... so actually the screen isn't cut out, but is just too large
If you play with your monitor controls you should be able to adjust the gamewindow to fit the screen.

Just for curiosity, if you try in DirectX mode you have the same problem?