Display driver stopped responding

[ItsVex]

Hey Guys, I didn´t found any Thread like this, so I decided by myself to open one.
I think I´m not the only one with this Problem.

Ok....
Every time I want to start - Amnesia: The Dark Descent. I´m getting the same message : Display driver stopped responding and has recovered.

And Amnesia is the only Programm/Game which give me this error message.

What I´ve done is. I re-installed the Game.
I verify the Game-Files (I´ve got the game on steam)
I deleted my Display driver and re-installed him.
I updated on the newest Display driver.

I didn´t found any google threads about this problem-.-
and thats really stupid that this is the only game which doesn´t work.

This is my System (if this can help)
- AMD Phenom x6 ii 1055t
- 4GB G.Skill 1333MHz Ram
- Sapphire 6870 @1GB

I hope you can help me
btw......Sorry for my English...I´m from Germany^^
Yours Sincerly - Dennis