With no information at all concerning your Computer setup including Make & Models the only thing I can say is that when you shut down Windows, Windows is either waiting for a program to end or is trying to stop a program. Thus the computer never shuts down because Windows can't stop a process or is waiting for a process to end.
For instance if a program is running a scan and you shut down Windows at that time, Windows won't shut down until the scan finishes or Windows is able to stop the scan from continuing as an example.
So by uninstalling the AMD driver and Windows shut down normally seems to indicate that the AMD driver is waiting for the GPU to do something or is stuck in some sort of cycle which prevent Windows from shutting down.
Once you post your GPU Make & Model and Motherboard information and Windows & AMD Driver version installed someone might be able to give you better advice.
NOTE: As for the Atiadllxx.dll error this website give some good tips on how to fix that situation: https://www.howto-connect.com/atiadlxx-dll-windows-10/
Nature and Causes of Atiadlxx.dll error windows 10
Usually, damaged windows system files are responsible for the Update Atiadlxx.dll Windows 10 Error. Corruption in the system files entries may threaten the well-functionality of a computer. Additionally, various events can cause this error to occur. Let’s have a look at the causes:
a) Corrupted entries related to atiadlxx.dll in the registry.
b) Malfunction or faulty hardware system.
c) If the latest update of atiadlxx.dll file overwrites the old one.
d) When one program uninstalls a dissimilar program using atiadlxx.dll files.
e) Infection of atiadlxx.dll files due to malicious invaders like spyware, Trojans as well as other malware.
These activities are responsible for corruption as well as a deletion of entries in windows system files. There is information in the system files that help usually for well functioning of an application. Due to the corruption, information in the system files goes missing and throws the Update Atiadlxx.dll error windows 10.
I would first run in a elevated Command Prompt or Powershell : SFC /scannow to repair any corruption in Windows 11.
Then I would use DDU with the Internet/WiFi disconnected and the AMD Installation folder at C:\AMD deleted. Then install the AMD driver and see if everything now work normally.
