Stuck on Start Screen Loop on Toshiba Laptop with Windows 10 - Login Unsuccessful

Hello,
Unusual problem, laptop with windows 10.
I have a password protected profile. After turning on the computer, I am greeted with a nice start screen with the time. After pressing any key, I should go to the login screen to enter the password, but this does not happen. After pressing the key, the login screen appears for 1-2sec and returns to the start screen all day. Has anyone encountered such a problem?
What I've done so far:
- Automatic windows 10 repair does not help.
- There are no restore points so I can't restore the system from a few days ago.
- I do not want to reset the computer to the initial settings because it is an interesting problem and I want to solve it
- In the registry in Profilelist I changed the profile path to log me on temporary (did not help)
- I have replaced files in Windows.ui.logon (Windows.ui.logon.pri)
- I tried to add a new user from the console, but he doesn't add it to me because another registry is opening
- Anticipating some questions: Disk OK, not faulty, battery removed, and other receivers from USB ports.
Someone something?

Erbit wrote:

kropq wrote:

... battery removed ...

Do you always have the battery removed?

seriously?

WIN 10 PRO, Dell Vostro. I have exactly the same problem after the update of 1/16/2017. Today I had to restart the computer and after a restart like a friend above. Login screen and wallpaper. The date time disappear and the login screen does not appear. Sometimes it appears for 2 seconds, turns the circle and returns to the wallpaper.

I turned on startup in safe mode - did not help.
System restore from restore point completed - failed.
Entering safe mode ends with a black background and cursor, ctrl + alt + delete does not work.

Restoring to an earlier point before this update, e.g. 9.01.2017, also failed.

The system does not respond to keyboard commands.
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When you try to uninstall the last update using the command line, the uninstall prompt (window) pops up for 2 seconds and disappears. Nothing goes on.

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The solution to my problem after this update was to remove the password from the account where it happened.

I confirm what the previous speaker has said. The problem is the password (some faulty update or something is causing it).
In my case, after removing the password, a black screen with a cursor appeared. The computer still did not respond to commands or keyboard shortcuts. After firing the command line (5xshift I replaced sethc.exe before) and running the explorer.exe process the desktop appeared and everything is hula.
Thanks to Jurecky for the consultation and hint from the explorer
In case of problems please
I close.