Hello, recently I reinstaled my windows 7, and I found out that my direct3d is not working , whenever I try to play any game it gives me an error with the direct3d thing, I installed directx, I tried to uninstal and reinstall video card driver, nothing, when I enter in dxdiag it shows me no problem detected, it shows me direct3d is enabled, why? I have amd phenom x4 2gb memory{for now} , amd radeon r7 270x , please help me, sorry for my english. (and when I try to change the resolution on my monitor I can't, it's stuck at 1366x768). I should mention that I installed and reinstalled and then installed again direct x last version... nothing!.