External Screen turns black seconds after plugging it in

When I plug in an external screen it shows content for a couple of seconds. after that it goes black. meanwhile it is still detected in windows, and i can “move my cursor over” I allready tried uninstalling the old graphics driver using the AMD tool and ddu, but norhing helped. Meanwhile when i boot the laptop of a fedora live usb, the external monitor work fine.

Interestingly when rebooting into windows from fedora the external screen works until the next reboot, or the next time the screen is unplugged/turned off.
Has someone expierienced this before and may be able to help`?