How to Change Window 7 Password without Knowing Current Password

Step-By-Step Guide to Reset Windows Password:

Insert windows 7 disk into your CD Rom and Restart your computer.
Press any key to Boot from the CD and then click on Repair your Computer.

Now from the various options select Command Prompt.

Now Command Prompt will be open and create a backup of Sticky keys by typing the following command in the command prompt

copy c:\windows\system32\sethc.exe c:\

Now replace sticky keys with the Command Prompt by typing the following command

copy c:\windows\system32\cmd.exe c:\windows\system32\sethc.exe

Now Restart your computer.
When you get the windows login screen then hit Shift button for 5 times continuously and Administrative Mode of Command Prompt will be open.

Now to reset the password just type the following command

net user geek MyNewPassword

Remember: geek is the username of the computer and MyNewPassword is the password. Replace both as you wish.

Now every time when you press Shift key for 5 times then command prompt will be open instead of Sticky keys. To get back these Sticky keys repeat first three steps and then in the command prompt window type the following command.

copy c:\sethc.exe c:\windows\system32\sethc.exe.

7 down vote

Use the command netplwiz. It will give you a dialog box that will let you change the username instead of just the display name.

Enter netplwiz at the command line
Select the account and click the Properties button
Enter the new name for the account

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How to Change Window 7 Password without Knowing Current Password