ok I upgraded my windows to windows 8.1, since I experienced other issues in other games as well... now dayz starts properly, but I havent tried actually playing yet. I think it will work now though :) Sorry for using up your time, as I see you got a lot of more serious problems to worry about :)

I uploaded it... pls note that the GPU shown is only the integrated one (since I'm on a Laptop), my real one is a Nvidia 750m (4gb Vram) as you can see when scrolling down to the Driver section :)