Dear Customer :
We've attached dual VBIOS back to you , 285PF5HB.U44(UEFI) and 285PF5HB.O44 and the atiflash tool.
Please make a bootable USB stick and then copy those rom files and flash tool into it.
Then use the USB stick and boot your system into pure dos mode and type below command after prompt -
     atiflash -p 0 285PF5HB.U44 -f

Then do not need to shut down the system and please use the VBIOS switch button and switch to another VBIOS.
Type below command after prompt again -
     atiflash -p 0 285PF5HB.O44 -f

After sucessfully updating those two VBIOS , please reboot your system back to windows desktop.

Please open CCC --> Preference and select "restore back to factory default".