Far cry 3 dx 11 problem

[sasabg7]

Have Win7 Ultimate 64 and Asus GTX590.

Tried new Nvidia inspector sli profiles. Tried used3d1:1. Dxdiag shows DX11. Cannot run game in DX11 always starts with DX9 regardless which exe I run and will not let me change it in the options.

I have gone into msconfig and have stopped all processes other than microsoft and still wont run.

Any ideas and what would cause this as it also does it on Crysis 2 and now worrying that Crysis 3 will do the same.

Please help

 

[popatim]

Have you tried disabling one of the gpu's and running it as a 580?