Lets block the fast startup feature following the steps below.
plant the latest Windows updates
Microsoft regularly releases cumulative updates with various bug fixes and security improvements.
And implement the latest windows updates fix the previous problems as well.
Thats why we recommend check and installing the latest windows updates before applying any other solutions.
Reset the power plan default
Sometimes the cause of this problem might be your power plan tweaks.
launch the System File Checker or sfc.exe utility tool that restores broken and corrupted files of the system.
and may help fix the problem as well.
If found any, the sfc utility tries to restore them with the correct one.
Additionally, the Fast Startup feature doesnt shut down your PC completely.
Rather it hibernated the kernel session.
After this step, test whether the issue when thecomputer wont shut downafter turning it off still persists.
