I'll tell you how to break windows password without any software!
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Step 1: Safe Mode
Boot windows in "safe mode with command prompt".
Select the Administrative account.
Step 2: Change Password
Open Command Prompt and type the following command
Don't type "<" & ">"
For example : net user Tim x
I typed user-name & a new password as x
HIT THE ENTER !
Done reboot the computer and when it prompt for password, type x and hit the enter