It can be that windows think your primary video card is your Intergrated one. Try disabling any other graphics cards in the BIOS to prevent this issue.
If you cannot disable them, try swapping your cables behind your computer. (I assume you have more than one video output.)
Try finding which one is the one windows uses, and you can change it afterwards in the AMD's CCC or the windows' Screen Resolution settings.
-Hope it helps!