Installed Windows update last night (Win10 64 bit on Haswell-E system with Samsung 4K monitor). System kept going to black screen. Windows recovery options didn't help. I had to boot into safe mode, uninstall device, use AMD clean remove utility. Any reinstallation of driver caused the same issue. I tried Windows WHQL version, latest 17.4.2 version, older 16 version. Same with all of them. I was able to source a RX480 card and it worked immediately.
i just have some problem before but install the older driver and get working
1. uninstall your current driver
2. download older driver here
3. install normaly, you can choose costume or expert
the older driver work for me..... the Newest driver be problem i think and just wait for new update