Fix for Error 207 that worked for me.
I had the same issue with an RX 5700xt. The GPU didn´t work as expected, image flickering, no working ports etc.. While installing a new driver I´ve got the error 207, so I used DDU for the driver uninstall and disconnected the computer from the internet. After 2 times of letting DDU doing it´s job I tried downloading the newest driver from AMD. It worked and the GPU is now running without an issue.
I hope that this is helpful for some of you.