AnsweredAssumed Answered

Asus N56DP Dual Graphics 7640g + 7700m Driver/Brightness issues

Question asked by kirderf on Jun 10, 2017
Latest reply on Jul 8, 2019 by iancatigay


I have an Asus N56DP with Dual graphics, AMD radeon HD 7640g + 7700m.



After the installation of Windows 10 x64 pro my brightness control and drivers stopped working.

I can´t adjust my brightness with the buttons.

AMD Radeon HD 7640g - seems to work

AMD Radeon HD 7700m - Error code 43, unit is stopped


I downloaded the drivers (2 days old). (Crimson ReLive Edition 17.6.1, 6/8/2017). The drivers don´t work correctly though, not the past driver version nor the newest one.

When it installs the software it gets error that my unit is not supported, it completes the installation of the drivers anyways.
But the drivers don´t seem to work. It still says "Error code 43, unit is stopped" in Device manager.


I also tried the "legacy" drivers but they don´t work either. (Radeon Software Crimson Edition, 16.2.1 Beta 3/1/2016)


When i right-click the desktop and chose settings for monitor/graphic-card it says "Microsoft Basic Display Driver" (Generic PnP monitor)

I also tried  disabling/enabling the "KMD_EnableBrightnessInterface2" in Regedit, both on 0000 and 0001, but can´t get it to work.



Any tips or suggestions?


Best Regards