@edgarblythe,
If you get real desperate, you can delete everything to factory setting. How to reset computer to factory setting
www.top-password.com
To access it, follow these instructions:
Boot the computer.
Press F8 and hold until your system boots into Windows Advanced Boot Options.
Select Repair Cour Computer.
Select a keyboard layout.
Click Next.
Login as an administrative user.
Click OK.
At the System Recovery Options window, select Startup Repair.
Restore To Factory Settings – Guide for Windows XP, Vista, 7, 8, 10
https://neosmart.net/wiki/restore-to-factory-settings/