: You must install the Platform Update for Windows 7 (specifically KB2670838) to add partial support for DirectX 11.1 APIs. Important Compatibility Notes
In DirectX terminology, there is a distinction between the (the software code) and the Feature Level (the hardware capabilities). d3d feature level 11.1 download
Direct3D (D3D) Feature Level 11.1 is a hardware-dependent capability of your Graphics Processing Unit (GPU), and no standalone download to "add" it to a card that doesn't support it Microsoft Support : You must install the Platform Update for
: DirectX 11.1 is built into Windows 8, and 11.2 is built into Windows 8.1. use Windows Update
: These versions include DirectX 11.1 (and higher) by default. If you see an error, use Windows Update