Hello there! Let me try to go as detailed as possible to see if someone can help me out with my issue.
I have a Lenovo G475 with (according to my current driver) Radeon HD 6310 graphics. I updated to Windows 10 yesterday morning from Windows 7 Home Basic. At first, I couldn't adjust the screen brightness from anywhere in the system settings. So, I thought it was time to upgrade my Display Driver. I downloaded the latest 15.7.1 drivers here from your website, BUT, I don't think it even updated my driver, as the issue remained. I tried clean installing it, removing it and then updating but to no avail.
Right now, I had to revert to an old Windows 8 Display Driver, AMD Radeon HD 6310M ver. 8.981.00 and so far its been partially working, since a command prompt window briefly opens upon start up. So, what can be the cause of this issue? And another thing, I haven't tried a clean install yet. I'll do so if that's the root of this problem.
Thank you for your time.