According to AMD that error 205 during the AMD Driver installation is caused by Windows updating the driver after it was installed: https://www.amd.com/en/support/kb/faq/gpu-kb205
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So basically use DDU (Display Driver Uninstaller) in Safe Mode (best option) or via Windows Desktop with the internet disconnected and AMD installation folder at C:\AMD deleted.
Install the AMD full package again and once it installs successfully without error, Reconnect the Internet and again delete C:\AMD created installation folder.