Windows 10: ptuck21

Hey guys, i left my computer running for about 2 hours and it had already had low space on the SSD where windows was installed, I came back to find i was logged out of windows and could not log in as when i typed in the correct code it said my credentials could not be verified, i can also not reset my pin, i cannot enter the password into anything in safemode so i can’t wipe my computer it says the passcode is wrong even thought i am positive it’s not and i am unsure of what to do because i cannot run my computer and my bios has the drive set to a automatic drive selection setting with

:)