I just bought this graphics card a few days, plugged all the wires into the power supply and everything. After uninstalling the old drivers from my last graphics card, I often get random OpenCL error messages. On top of that, I get a white screen on my side monitor and a black screen on my main monitor, though this usually happens when playing siege (can't reopen siege as it doesn't allow me after the crash). I don't know if it is a hardware problem or if it is just a problem with software that I haven't installed.
Welcome to the Club. We are complaining about the same thing for a while now. AMD is having a hard time adjusting to the Navi architecture. If you still have your return window open, I would suggest you do so.