Need help :/ ! Game resolution/in game setting

[kosa0053]

Hey, i was changing some options in game, then i clicked 1 option named "High end computer" thingy and my game is looking like that http://scr.hu/9eli/yfrnn , so i can't do shit about it... it's too low resolution to change options and even login to game...

I really need help cuz this game is amazing, but im trying to find good looking/not lagging game to play... :/