I had a similar issue with Windows Password Unlocker after purchasing the $50.00 "PRO" version. I used both the USB boot and the CD boot with different issues. The USB boot loaded the program and appeared to work once but it really didn't change anything (both the password and the new admin account were simply not there). When booting from the USB on a different machine the program froze every single time.
The CD was not much better. I tested it out on my wife's laptop. It boots to the CD, the program opens up and you select the OS and user password you want to remove/change, hit "next" and prompt says it was successful and asks if you want to reboot (this also matches their 4 easy steps). Upon reboot, the password had been removed but no new password existed so we were basically locked out. I rebooted and ran the "unlocker" several more times with absolutely no luck. I even re-read the "easy" steps to see if I was missing anything. I am also relatively new to the I.T. field but this should be an easy task. After a week I still have yet to receive a response to my "support desk" email regarding this. I use the term "support" loosely here.
We basically just used a Windows recovery CD to gain access. This product certainly seems a bit like a sham.