I could use some tips on how to fix my Sapphire rx 470 4GB. I flashed with AtiFlash. Modded with PolarisEditor. Only thing changed was timings 1750 to 2000. Rebooted and the screen won't start. When I connect and second card and use that as primary I can see the rx470 in device manager with a exclamationmark(code 10 the device cannot start) and named video card vga. Flashed the card again with the original bios but the card is still dead.