hopefully RMA will be very quick specially if its in stock or OCUK test the card and its non-faulty they normally carry out their checks pretty quick.
does your mobo/cpu have the feature to run a display off them without the need for a a gpu?
if so, might be worth running it to see as well as running DDU (Driver Displayer Uninstaller to clear any Nvidia/AMD drivers hanging around) if you didn't already. some people swear by this when even updating to latest driver. I dont but I do when switching between AMD/Nvidia cards.~
With new builds now I dont install GPU till windows is 100% updated then add it and install the drivers .
did all that, it was super fun rebooting over and over again, lol. the mobo has an hdmi out but as far as i know it does nothing without an apu in the cpu, se why the f its there ive no idea
I know an Asus Strix RX470 8GB will work with a Asus M5a97 EVO R2.0 since my mate just got one,so I would expect an RX470/RX570 should generally be fine,so hopefully its a slightly wonky card.
oh thats my old mobo, must update, lol