Windows 10: Double problem: black screen after login and unknown password required for troubleshooting

First, during an update the laptop crashed.Restarting the computer the update ended normally.1Restarting the computer2At login the PIN works normallyFirst Problem After login the screen turns black, the cursor is visible.At this point things not working:Ctrl+Alt+Canc sends me to task manager option, I click it and the screen turns back to black with cursorWin+Shift+Ctrl+B gives me a beep, the cursor goes back to the center of the screen and nothing elseWin+P gives nothing.Shift Shutdown restart brings me back to 1Ctrl+Alt+Canc and Shift+Restart Brings me the Recovery optionsAt this pointC

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black screen

Hi Bart,

It is possible that you're experiencing black screen due to corrupted system files. To assist you better, we'd like to gather more information:

• Are you getting any error messages?
• What happen when you tried to login?
• What troubleshooting steps have you done so far?

In the meantime, we suggest that you follow the steps in this
article to troubleshoot black screen errors. You can choose which situation you're experiencing the error and perform the instructions.

Let us know if you need further assistance.

 

Frequent black screen/unresponsive requiring hard boot

Hi,

Please provide more information to help you better:

• Are you getting black screen before sign in or after sign in?
• Have you made any changes to your computer prior to this issue?
• Have you installed all the pending Windows updates?

I suggest you to follow the steps form the below article for “Black Screen” issues and check if it helps.

Troubleshoot black screen problems

Troubleshoot black screen or blank screen errors

Please get back to us with an update on this issue, we will be happy to assist you further.

Thank you

 

Black screen with cursor after login

Hi Sarthak,

We'd like to verify some information to help us sort out this issue.

• How often do you encounter this problem?
• Did you receive any error message?

Since you've tried almost all workarounds to address this problem, we suggest that you follow the steps and instructions provided on the link

Troubleshoot black screen problems. Let us know if you encounter any issues so we can assist you further.

Looking forward to your reply.

Regards.