Have a Windows 10 computer and can't seem to find the administrator account. It could be that the vendor or manufactured that you purchased your computer from disabled the account.
Here's the easiest way to activate the account so that it's no longer hidden.
Open command prompt as administrator, by just right clicking on the mouse when opening up the program. Then type the following in the command prompt menu. "net "user administrator / active: yes" and then press enter. Now when your restart your computer or sign off and sign on again, you should now, be able to see the administrator account.