I updated my system this morning and didn‘t restarted. Then my system froze and I had to turn it off via the power button. After restarting my system everything is fine, but instead of the Log-in menu a black screen with the moveable cursor on it is displayed.

Black Screen with Cursor instead of login menu

Bryanpwo September 8, 2022, 8:50am 2

It seems that the computer switched off during installation of the updates, which led to an unbootable system.
Perhaps you can take a look at this thread: