I recently upgraded from Windows 7 to 10. My wife and I had user accounts, and I had administrative privileges. Recently, my wife's account disappeared, even though her files are on the computer. In trying to deal with that, I discovered that I had lost administrative privileges, so that I can't make any major changes to my computer. Any time I try to give administrative approval, I get a box:
User Account Control
Do you want to allow this app to make changes to your PC?
To continue, type an administrator password and then check yes.
The problem is that there is no longer a place to type a password, and the Yes button is grayed out. When I go to the User Accounts screen through the Control panel, my account is identified as: Local Account and Guest Account. How can I restore my administrative privileges so that I can get things in order?