I seem to have exactly the same problem. I tried to uninstall the last Windows updates, clear the graphics drivers using the AMD cleanup utility, and install again - nothing helps!
Describe your system:
- AMD Graphics Card Make & Model
- Powercolor Radeon RX480 Red Devil, 8 GB
- Desktop or Laptop System
- Operating System
- Windows 10 64bit 10.0.19041 (I uninstalled the last Windows updates to try and get the graphics drivers up and running)
- Driver version installed
- I tried both adrenalin-2020-20.11.2-win10-64bit-nov18 and non-whql-radeon-software-adrenalin-2020-21.1.1-win10-64bit-jan21
- https://imgur.com/a/GRmfWSV
- HP w2207 Wide LCD Monitor, connected via DVI, 1680x1050
- CPU/APU Make and model number
- Motherboard Make & Model + Bios Revision
- Gigabyte GA-Z170-HD3P, F2 27.07.2015
- Power Supply Unit Make & Model + Wattage
- BE QUIET! Straight Power 10 500W
- System Memory Make & Model + Frequency
- KINGSTON HyperX Fury DIMM Kit 16GB,
DDR4-2133 (Kit of 2)