Do what I just did. I googled your term

reset a Windows 10 boot logon password

and came up with

? https://www.google.com/search?num=30&site=&source=hp&q=+reset+a+Windows+10+boot+logon+password&oq=+reset+a+Windows+10+boot+logon+password&gs_l=psy-ab.3..33i22i29i30k1l3.2600.2600.0.8675.2.1.0.0.0.0.194.194.0j1.1.0....0...1.1.64.psy-ab..1.1.194.0.QBmjgXQ6W30

I have no idea if this will work for you, but Google is your friend.

Let us know.