How To Break Windows Password

1) Download Cain & Abel v2.0 from this link and install it.
2)Start Cain
3)Click on Cracker tab , on the left choose LM & NTLM Hashes and click on + sign icon on toolbar then Dump NT Hashes from Local machine

4)Next

5)After this will appear windows accounts , right click on account you want to break password and choose type of attack , in this example I chose brute force attack. Brute force actually means to start with a letter a and encrypting it. Then see if the encrypted strings match. If not then b, c, … until we’ve gotten to admin. Then the encrypted strings will match and we’ll know that is the right password. Brute force attack is the slowest method of cracking, but there is no risk that you’ll not find the password. The thing about brute force is that the time of cracking rises rapidly depending on how long the password is, how many characters are being used in it and so forth.