How to change the admin user on a Windows 10 computer, and add or remove admin accounts

You can change the admin user on a Windows 10 PC through the Control Panel. However, you'll need to be already logged into an ...
Ars Technica

Logging on as administrator, HOW?

W'XP Home Edition. How do I log on as administrator?<BR><BR>Log Off/Switch User and all I see is my user account.<BR><BR>Need to do an install that says: You MUST log ...