Win 8.1 (and Win7) must be fully updated from Windows Update before any AMD drivers are installed. Go to Windows Update and run it...continue installing updates/rebooting/installing, etc until you get the message " There are no more updates available ", Then install one of these drivers (full version) > Desktop
Do a clean install > Clean Install AMD Graphics Drivers
Thank you for your answer, unfortunately it didnt help.
I installed all the Windows Updates, but when installing the graphics driver it just turns into a black screen during the installation and nothing changes.