I am running a HP Pavilion laptop with switchable graphics. My laptop has an i7-2670QM processor with integrated HD3000 graphics. I am also using a AMD Radeon (HD 6770M) graphics board with it. I was getting the notorious "Exception Access Violation Error" when trying to run Amnesia. Even though I had used the switchable software to set Amnesia to use the more powerful Radeon board, Amnesia was not recognizing the Radeon board.
Then I found this:
http://h10025.www1.hp.com/ewfrf/wc/docum...=us&dlc=en
I pressed f10 while rebooting my laptop. I then tabbed over a couple of times and changed the switchable graphics mode from "dynamic" to "fixed" and saved the changes.
I no longer have any problems running the game!
The only negative is that I must be plugged into the wall to run the game (to use the more power intensive Radeon board). When using the battery, my laptop defaults to the HD3000 (more energy efficient anyway).
I hope this helps someone.