Well I get the black screen again. Known solutions didn't work. System/Library/Extensions/NVDAStartup.kext/Contents/Info.plist seems new. There is no more my serial number of my PC!? I was able to update to 10.12.1 and I was able to update Nvidia driver. After that I got black screen... Edit: Well it's working. I looked in the wrong file ... That is correct /System/Library/Extensions/AppleGraphicsControl.kext/Contents/PlugIns/AppleGraphicsDevicePolicy.kext/Contents/Info.plist And now it is working perfect.