Windows 10: ONLY USER(local) Password not working. Now cannot sign-in!!

So yesterday I restarted my computer after an update and I type in my PIN as usual to login and then I get a message saying "Your password was changed on a different device. You must sign in to this device once with your new password, and then you can sign in with your PIN."

When I saw that, I realized it had to have been my fault because I was using the command prompt on my girlfriend's laptop to get to know the network commands and I stupidly decided to test out changing my password from the command prompt. The thing is I only left out one letter when I typed in the password on the command prompt just to test it and see if I it worked. Well, now I can't login to my own laptop because of my own dumb curiosity *Doh. Even worse, I didn't add a second user since I had just done a clean windows 8.1 install and directly updated to Windows 10. So since I only have ONE local user, I can't use another user to login and fix the problem. I'd like to avoid reinstalling from scratch. I'd really appreciate the help guys!! Thanks in advance!

Also, my girlfriend used the flash drive with my password reset file on it so that's not an option for me. For now I added my Live user account to my girlfriend's laptop for the time being to see if I can fix this but so far, no dice!

:)

 

Not able to create User Accounts after update. Even tried alias.

I just upgraded to W-10 Anniversary update. User accounts changed, there were 2 and they both had administrative permissions and now I can only sign in on one account. I've tried creating 2 more user accounts complete with password, Microsoft outlook
and they appear on welcome screen however when I try to sign in on them I receive the following notice: The User Profile Service service failed the sign in. User profile cannot be loaded. The only account I can sign in on is not designated local account.
I desperately need to have this fixed because I am due to start work tomorrow using my computer.

 

Updated and now I cannot create another user account

I just upgraded to W-10 Anniversary update. User accounts changed, there were 2 and they both had administrative permissions and now I can only sign in on one account. I've tried creating 2 more user
accounts complete with password, Microsoft outlook and they appear on welcome screen however when I try to sign in on them I receive the following notice: The User Profile Service service failed the sign in. User profile cannot be loaded. The only account
I can sign in on is not designated local account. I desperately need to have this fixed because I am due to start work tomorrow using my computer.

 

I managed to find my flash drive with the userkey. Plugged it in and the wizard popped up and filled out the new password and password hint, I hit next and then got an error message saying:
"An error occurred while the wizard was attempting to set the password for this user account."

So maybe this is something else?