There are many ways to break down windows password. I have mentioned some method related to earlier SAM files in windows and of course there is a way to use LIVE version of any appropriate operating system to enter in the system.
If you care to purchase some software for that then I can recommend you a very useful software which does exactly that and without any hassle or loss.
If you can’t Login To Windows? Locked Out? Forgot Your Password?
There is just One Step – No Hassle Solution! by Windows Geeks.