Graphics Error on Amnesia the Dark Descent

[EmilNielsen]

http://www.frictionalgames.com/forum/thr...l#pid89162

right click my computer>manage>device manager

Okay, now i'm at the last step, but when i press install, there pops up a message that says "It's not recommend that you install this driver because Windows cannot confirm that it will work, your computer can begin to run slowly, or stop working at all" ..


So i'm not really sure what to do ..