Reset Forgotten Local Administrator Password on Windows

Where angels fear to tread, fools rush in. I happily removed my computer from the domain and restarted Windows 7. When the computer came back up, I couldn’t login with my domain user account – which was not surprising. However, I could not log in with the local admin account either! I had reset the password like 6 months ago and forgotten about it. Now I couldn’t log in to the computer, and no one could help me remotely.