Heard many complains about not able to shut down and restart after updates. Tried all the suggested solutions but none worked.
Some suggestions, not in order.
Run & scan for malware/virus.
Go to Task Manager to see what process &or services are running in the background, as some process/services may started after certain period of time.
Do a review on all the process & services.
In the Windows Updates do check for any failed updates or errors reported.
Or any updates not in order or may required to undo.
If any recent upgrades of hardware then may have to remove to see if this issue go away or not.
Or any conflict issue with the hardware updates.
Do secure your ownership on Windows 10 prior to upgrade or re-installation.

