Windows 10: Stuck on log in screen

I sat in front of my computer today only to power it on and find myself stuck in the log in screen. My mouse and key board are unresponsive only when I've reached this point. I've tried powering off the computer multiple times, I've run tests and nothing came from them. I'm desperate for help at this point. Any suggestions?

:)

 

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

 

Black Screen after Log on

So this is not a BSOD ? Have a Windows 10 disc or USB Flash Drive made ? How are you getting to task manager Ctrl.+Alt+Del ? Any cursor on screen ?

 

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.