I have a desktop pc with Radeon HD 6670. After the update to Windows 10 the graphic was very low, so I tried to install "amd-catalyst-15.7.1-win10-64bit" but it stopped during the installation with the error "application install: install package failure". So i opened device manager but I didn't find "graphic card", only "driver video base Microsoft". I read that I had to update this driver selecting the folder in C:/AMD but it says the driver is already updated. I also tried with older drivers but it's the same. I apologize if the question is already present but I've searched a lot in the forum and I've found a lot of people with problems similar to mine but not the exact problem. What can I do? Thanks.