Windows 7 not detecting DirectX 11

[phillipletaco]

I have a Sapphire ATI Radeon HD 5770 that supports DirectX 11, but Windows 7 only detects it as DirectX 10? Does anyone know why?

I have included a picture.

 

[Dark Lord of Tech]

dxdiag

Type this in the start search box,and click the dx icon and it will show the version on your computer