i recently uninstalled windows 10 a bit forcefully from an alienware 15 r2 and installed windows 8.1 for compatibility for equipment and now i cant run any games what so ever and i installed everything correclty drivers and all and i cant run games but oddly enough i CAN run the original half-life no problems but the other games spit errors at me like "cant find d3d device" or a in depth one like this fatal directx error code 4 0x80004002: E_NOINTERFACE and even just crash before starting i have directx and graphics drivers are fully up to date i did get a game like just cause 2 running after several reboots but that froze at the menues