Windows 10: I cant log into my pc and im stuck in menu screen. What can i do?

Hi, I have a problem with a stuck loading screen, after I turned on the computer I entered the password and all I see is the welcome screen, I let it load but it's been running for 30 minutes without any change, the only thing I can do is turn it off and on and choose between accounts, unfortunately I can't log in to any of them, what should I do please?

:)

 

Windows 10 stuck in log in screen. log in screen is not showing.

my log in screen suddenly disappeared. and i am stuck in log in screen. i cannot longer open my PC because log in screen won't show nor the users and password prompt. its just dimming in black.





After i press enter or click or other keys its just dimming in black without user log in and password prompt. and i am stuck.





i attempt to use windows recovery environment or shift + restart key but its not working. winRE not showing. its just normally restarted.
i attempt using bootable USB Drive inserted then restart but nothing happen.

i think the best way for this is reformatting, but i dont know how because i cant log in in desktop and windowsRE are not working too.

im run out of ideas . any ideas to solve this prob? i really appreciate . or any ideas how to force format in lock screen ?
thanks to who will response.

 

My pc is stuck at Black screen with cursor

Hello There Everyone.

I shutdown my pc yesterday after work after 12 hours i open it but i am stuck with black screen. I tried my steps to open it but it dosen't work.
Steps i did
*i tried to startup repair on advance menu
*i have reset the pc ( its says problem occured)
*i have Uninstalled recent update.
My pc specs
*Acer Veriton
*64 bit
*windows 10
Please help me to solve out

 

Black Screen after Log on


Computer boots to windows log on,have no password here.After a minute on log on it go to a black screen,stays there forever. I can get to Task Manager from black Screen,lost on what to do next. Just want my Windows 10 back, not sure what caused this problem. Any Suggestion on what my next step should be?*Sad