I have a sapphire radeon r9200
DVI-I to hdmi works fine
HDMI to HDMI works on startup but then stops working when windows logs in.
I can hear windows log in. I dont use hdmi audio
HDMI to HDMI also works with AMD drivers uninstalled.
When I try to install the latest driver the screen goes black at about 33%
I cant find any help online about this and called AMD but they were no help.