magari è stato già scritto, stamattina mi sono svegliato e w11 dopo il login mi rimaneva lo schermo tutto nero (ma win funzionava). Ho risolto così

Tried many things and one the option in this video worked for me as well. Basically:

- Open task manager (CTRL+SHIFT+ESC)
- File, New, Run new task.
- Type Services.msc with admin privileges checked
- Locate App Readiness service and change it to disable (IN ITALIANO -> Preparazione App)
- Again using task manager run new task
- Type CMD.exe with admin privileges checked
- In cmd prompt, type shutdown /s /f (don't forget the space between the 2 parameters)
- Wait and you machine should shutdown
- Start the machine and no more black screen after logon problem...

spero che possa essere utile