Look up user account, and admin rights to do with windows, if you are using that OS.
Google is a good place to Start, or have you never heard or bothered to use it ?
It`s full of advice and answers if you can be bother to use it.
Practically a simple case of typing in Google!
"How to remove my account passwords in windows". There you go simple.
Did that surprise you ?.
Never surprised me like, because that is what you use Google for in the first place.
Other than going through the process of signing up to a forum, to get the same answer from Google anyway, From someone who just used Google d it to get the answer to your question.
Lot of time wasted there, if you think about it.
This is perfect! On the other hand, you can also use Windows help and support page. Goodluck.