I am having Dell Inspiron 15r 5548. It is having hybrid graphics card of AMD Radeon R7 270M along with Intel HD Graphics Family 5500. Recently when I upgraded to Windows 10, there was no sign of any AMD driver installed. Also I couldn't find AMD Catalyst manager from where I used to set performances of my games. I tried installing new graphics driver compatible with windows 10 but it failed. What to do ahead?