1. How to get to safe mode with networking in windows 10 :
https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode
2. DDU disables windows update temporarily from updating Graphics drivers in safe mode. But if you want to you can plug off your network cable from computer to be sure.
So first download the new drivers you want from AMD site and put file to desktop. Then download DDU and move that to desktop, you can extract it in safe mode also but its easier that file is on desktop because of low resolution.
Now boot into safe mode with networking, with or without internet cable plugged off. Extract and run DDU from desktop, be sure its selected AMD and not NVIDIA. Here you can see how it looks : http://cryptomining-blog.com/8693-use-display-driver-uninstaller-ddu-to-clean-up-video-drivers/
Press clean and restart (recommended) and let it run to end, it will restart your computer automatically after deleting drivers and boot into normal windows.
Dont worry resolution can be odd looking when your back in windows, then just install your new drivers you already downloaded to desktop.
EDIT: Plug network cable back on after you installed new drivers to be sure