So, i have the inspiron 15 3521 with 7670m and the problem was that "FSX" pc game didnt recognize the gpu, just the integrated graphics hd 4000. After a lot of research and looking for a solution in some forums,there seems to be a solution by using a different catalyst version provided by leshcatlabs. I tried to make a clean installation of these drivers with no success. Also i tried to install previous AMD catalyst version with no sucess too... Only the driver provided by Dell is installed correctly.
What should i do?
Bellow is the relative thread
http://en.community.dell.com/support-forums/laptop/f/3519/t/19488314.aspx?PageIndex=1