I've been 2 days trying everything to have the game starting up.
-Checked game file integrity with Steam
-Deleted and downloaded the game again
-Tried dinput8.dll fix (I'm on windows 8.1)
-Set compatibility mode and tried every OS available with and without administrator permissions
-Uninstalled latest nvidia drivers and installed previous ones (I've played the first 3 chapters on another computer, this might have caused this problem, on that computer there weren't latest graphic drivers. I have copied the save to the new pc)
-Changed resolution (native 2560x1440, tried all)
When I start the game (through Steam or directly with the exe) there is a black screen for about half a second and then my screen resolution is changed to 1024x768 then after 2 seconds it gets black again for 4-5 seconds and return to the previous resolution. No "****.exe has stopped working" dialogs. Here is my support tool file https://www.sendspace.com/file/c59v94.
Here are my pc specs (think they're really above recommended):
Intel Core i7 3930k
2x GTX TITAN
16GB ram dominator GT
Windows 8.1 64-bit
nVidia 337.88 WQHL Drivers