[Pirate]

My advice would be to reinstall the drivers for the video card, uninstall them fully using driver sweeper (free) first then find and install latest drivers - this is in hope that the settings in the conf.ini somehow damaged or corrupted the driver installation. If this has caused problems outside Il2 then its the only 'fix' I can think of - It might also be worth reinstalling direct x.

I cant think of any other fixes, the only other problem that comes to my mind is that the graphics card is damaged.

I hope you get it all sorted out.