Okay, so I have a 64-bit Windows 7 laptop with 4GB memory and an Intel Core i7 processor as well as a new nVida graphics card (Don't know exact version) - DX11 is installed and all drivers are up-to-date. Yet when I start the DX11 version, the opening movie is fine, but afterwards the screen goes black and the game doesn't start. Mouse is not visible and music does not play. I can close out using Ctrl+Alt+Delete. DX9 works fine. Any ideas as to why DX11 doesn't work when it is clearly capable of working?