If you want to check the version of direct X you installed on your machine, it is simple
1. Start Menu => Run (Windows key+R will also open the same)
2. Type dxdiag on the Run box and press OK
3. An alert window will raise with a content like “Do you want to allow DxDiag to check if your drivers are digitally signed, …….”
4. Choose Yes
5. A window will open
6. On the system tab at the bottom you can see the DirectX version.