I have 3 RX 470's 4GB i edited there bios with polaris and worked flawlesly until i reisntalled them in new rig with new windows i keep getting error 43 in device manager with yellow triangle, in order to make them work again i flash them back to stock bios.
I tried them individualy on another PC but same resutls.. error with flashed bios rom.. i defently had them working before