Upside down screen...

[madprince]

Hello, i have a big problem when you end up seeing one of the zombies (or w.e the hell them ugly things are lol) or something in the game that scares Dan, the screen just flips upside down and if i have insanity on...it stays fliped, now i have read around the internet and found that afew others are getting this and was told to update their drivers, i have done that and STILL get it...makes it almost undo able when you have to distract one of the things by throwing something.... anyway to stop it,

ps i would really like a fix so i can use the insanity...let alone play the game without getting motion sickness