ophcrack is an excellent free application to recover the Windows passwords that we have lost with re establishing capacity to recover them in 99% of cases.
As indicates its name, ophcrack cracks all Windows passwords based on "rainbow" charts (random characters base from where it’s possible to, through hard way, to decipher a password).
ophcrack has a small utility that allows to download a disk image (ISO) and to reconstruct it in a virtual disk from where one will be able to access with Live CD, to all passwords stored in the computer, finishing this way with the problems that we have with our operating system accounts.
Using ophcrack is simple and there are two ways of making it:
With this application we don't have to worry if we have lost or forgotten our Windows account’s password.