I recently installed Windows 10 on a notebook with a AMD Mobility Radeon HD 5000 series Graphical Processor. Installation ended in a black screen. When I reboot/startup I initially see a Windows 10 logo that disappears after approx. 5 s. Then the screen turns black. The screen goes alive when the brightness is increased using the function key (F6). The screen remains live as long as brightness is 75% or higher. The screen goes dark when decreasing the brightness to values below 75%. External screens have no issues.
Has anyone experienced this problem and/or know a solution?