RX 470s Windows has stopped this device - Help

[AVP]

Started having an odd issue where 3 out or 5 identical Saphire RX 470s keep getting stopped by windows:
"Windows has stopped this device because it has reported problems. (Code 43)"

All cards are Hynix cards with modified bios straps. atikmdag-patcher_1-4-6 was applied after bios flashing.

If I disable then re-enable cards in Device Manager, they appear and can mine. But after reboot Windows stops them again.

Running Windows 10 v1809 and ATI drivers v18.6.1.

Any advice / recommendations on how to resolve this would be greatly appreciated. Thanks.

[abhiseshakana]

You should try to run DDU to completely remove your amd display driver and reinstall adrenalin 18.6.1. When the installation has completed just restart the system and run patch 1.4.6 then restart the system again.

Or .. If you made a backup of the card bios (original bios), you can try to flash your GPU with backup bios to see your issue caused by the bios or something else.