When you use your Windows password forgotten or you are, for example, the administrator of a computer of someone else, then you can use Ophcrack to use within a very short time Windows passwords to crack.
Ophcrack is an open source program that Windows passwords are cracked. Ophcrack makes use of the technique of "Rainbow Hash Cracking'. Rainbow tables contain pre-computed hash values for every possible combinations of a character. Those values are then compared with the values of the hash to crack the password.
The software can 99.9% of the passwords up to 14 characters within a few minutes to figure out. There is also a Live CD variant available, which you can directly from a CD boot without having to install.
Ophcrack has the following characteristics:
You can free download Ophcrack and safe install the latest trial or new full version for Windows 10 (x32, 64 bit) from the official site.