Hi need some help with this error every time i load up ArmA 3 my gpu is a AMD Radeon HD 6670 and i know you guys are like Nvidia for the win but hey it was better than my nvidia gt 240. Anyway back to the point this error pops up every time and i have tried the dxsetup.exe in the ArmA 3 file and that didn't help much. Also i bought it on Steam. I'll appreciate any help i can get thank you.Plus my Dxdiag file would be up and my specs are also in the description.

(didnt know on how to copy my specs but Dxdiag will tell more)
OS:-Windows 7 64-bit
Proccesor Pentium(R) Dual-Core CPU E5400 @ 2.70GHz ".70Ghz
Gpu:- AMD Radeon HD 6670 {F21163}