reset video options

[D-Virus]

Hi, did somebody know how i can reset my video options in KB, because everytime i want to start it, my monitor show me "out of range" so i think the refresh rate could be too high for my monitor.
I use Steam, tried to reinstall and delete the game.ini
Deleted the appcache folder in steam too, but nothing changed.
So now its unplayable for me.
Thanks for help