i cant play any of my games on my pc because it seems i do not have any directx at all, at least as far up to directx 8, as i know of anyways. i have some sort of nvidia graphics card or something, and the error says that my directx is unsupported. i used to be able to play all of my games, and after downloading windows 8.1 i was unable to play any of my games. HELP?