Hi!
In this “How-To” we will learn how to SIMPLY change/reset a password for a Windows OS by 2 different methods:
METHOD 1 <<<<<<<<<<<<<<<<<<<<<<<
-Command Prompt Window (Start - Run- cmd)
-type command ------ net user
-Check account you want to reset (Ex. Admin)
-type command ------ net user Admin * (Its very important the space between the account and the asterisk )
-Will prompt for a new password
Works for:
Windows Server 2003
Windows Server 2000
Windows Vista
Windows 7
METHOD 2 <<<<<<<<<<<<<<<<<<<<<<<
1.Boot with a live cd (ubuntu linux works fine in “Test” mode, this OS is FREE!! and you can downloade it here: http://www.ubuntu.com/download and after that, burn the ISO in a blank CD or mount it in a USB Pen Drive)
2.In linux go to FileSystem / host / WINDOWS / System32
3.- Locate a file called “sethc.exe”, rename it as “sethc.bak”
4.- Locate a file called “cmd.exe” and do a copy of this file in the same directory (if you copy-paste the file in the same folder automatically the copy will be called “Copy of cmd.exe” so that will be the easiest way)
5.- Rename “cmd.exe” as “sethc.exe”
6.- Thats all we will need from linux so, restart the computer normally, and enter to windows session
7.- In the user/password screen push “shift” 5 times, this will prompt a cmd window
8.-Depending on your OS type:
(Vista OS or above)
netplwin,UsersRunDll
(OS older than Windows Vista)
rundll32 netplwiz.dll,UsersRunDll
9.This will prompts a window, Select the account you want to reset and write a new password or none
10.- “Ta-da.mp3” jeje
Right now I dont remember exactly if this method works with Windows Server environment, I’m pretty sure it does, but I dont want to lie to you, if somebody could test it again and tell us, will be great!!
***UPDATE: This method works fine in Windows Server Environment !! Thanks Reap3r !!
I truly know that this works fine in Windows Vista and Windows 7 anyway
And well the first method is faster, but you require a cmd window
The second method depends on having a linux live cd ( if you dont know anything about linux, dont worry about, ubuntu is a user friendly graphic interface, so you will not suffer with that, unless you are a command line caveman as me jeje, if I can make a suggest, always install an ubuntu small partition (no more than 1 or 2Gb) just to have a backup plan for this cases or iif your windows session screw up for any reason yoo can recover your files 
Well, hope you like this post and hope you solve your issue soon with this, I know some other methods around here but they are more complex, using rainbow tablos etc… things beyond my understanding but they also work, if you like them drop me an email here and I can send it to you !
Regards Everyone
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