Re: BF4 WONT EVEN LAUNCH! DIRECTX MANTLE ERROR MESSAGE
If I had to take a guess, I'd say that the game's trying to render in Mantle when your NVIDIA GPU doesn't support it(Mantle is an AMD-specific render API). Check in C:\Users\USERNAME\Documents\Battlefield 4\settings and look for a file labeled PROFSAVE_profile. Look in there with a text editor(Wordpad strongly recommended) to see if you can find any settings to change render API.