Microsoft Account Password.

I am logged in as a Guest even though I am the Administrator. Now, how do I get in with my passwork when the sign in won't let me type all my password.  It also changed my computer settings.  How do I log in as the Administrator  so I can log out.  How can I get out of having to log in all the time.  I am having too much trouble and it seems so easy for someone to figure out if they click on it long enough, they will gain access to my computer.  Someone please answer as soon as possible.