The screen is completely black and you cannot enter the command line interface.
This often happens after performing certain installation operations and restarting.
At first, I thought it was a problem with the installation of the graphics card driver, which would happen when the graphics card driver was installed incorrectly.
But today, I did not operate the graphics card, and a black screen also appeared, and the system was operating normally before shutting down and restarting.
It has been resolved, just disable the direct connection of the graphics card in the BIOS