I installed Windows 7 Professional 64bit NOT OEM, because hd change. I installed Catalyst 13.12 downloaded from amd site, later all the win updates. I used it until the 14.4 publishing, then i used amd cleanup utility, to uninstall my 13.12. I tried to install 14.4 but nothing, installation seems to go right, but no request of reboot. At reboot i've "generic vga " setting. I tried to install it in safe mode , and with whql disabled , on administrator or normal user with admin rights, but nothing. I tried to load .inf files, on device manager, but nothing. I tried to re-install 13.12 , that i saved, but nothing, and in all the ways i lised before. My last chance was the try of the Acer amd driver, and it works, it's the only that works, but it's 2010. I ever updated win7. simply, why i can't run amd official drivers again?