How to open windows 7 without knowing password?

I want open computer have windows 7 without change or removed a password

There was a way to do so was based on ISO file put him on CD and log through it but stopped now
Is there a way doing the required?

Yard Dog said:

Have you tried this : Built-in Administrator Account - Enable or Disable

This option is old and require you to have permission to access on Windows.
But I was talking the windows actually have password also administrator account already enabled.

Yard Dog said:

So.. you went to this link in that tutorial and still can not ? Built-in Administrator - Enable from WinRE

Built-in Administrator already enabled and have password

Does that mean you have the password to the enabled Built-in Administrator account ?

DavidW7ncus said:

Does that mean you have the password to the enabled Built-in Administrator account ?

I have user name "ahmad" have password
and built-in administrator also have password

I can use any program such as: NT offline password to removed a password, but I want login windows without any change of any account

If you are forced to change a password and that is the issue, see this tutorial by Brink.
See Option TWO, step 5 to disable password expiration.

Password Expiration - Change MAX and MIN Password Age

I login to many Win 7 accounts and I never have to change any account ...

DavidW7ncus said:

If you are forced to change a password and that is the issue, see this tutorial by Brink.
See Option TWO, step 5 to disable password expiration.

Password Expiration - Change MAX and MIN Password Age

I login to many Win 7 accounts and I never have to change any account ...

Sorry David, but you don't understand me
This issue you put to change Max & Min password age and have permission to login windows
My Question is I want boot with USB flash or CD and open the windows without password and not change it
If I wand change password can used NT offline password to clear password from any account created on windows

By design you cannot login to a Windows PC without providing the login name and password of an appropriate account. The ability to do otherwise would be a serious security risk. Some accounts may not have a password in which case none need be provided. The Guest account normally does not have a password but it is usually disabled. In any event it has very low rights. If you log in with an admin level account you can change the password of any account. You will not be able to see any existing passwords, even your own. There are software methods of reseting a password without logging in but I will not discuss them.

Edit:

My Question is I want boot with USB flash or CD and open the windows without password and not change it
If I wand change password can used NT offline password to clear password from any account created on windows

To me this is hacking and I will not discuss it.