Microsoft forbids any assistance being given in these Forums to help you bypass or "crack" lost or forgotten Passwords.
Here is the Microsoft Information outlining that Policy:
And this is the Microsoft Information about problems with Passwords;
You will have to borrow a Microsoft DVD from a friend if you don't have one, as a Manufacturer's Recovery DVD does not have these particular working options available.
***If you cannot log on to Windows 7 or Windows Vista, you can use the Windows Vista System Restore feature, or the Windows 7 System Restore feature.***You may be unable to log on to Windows Vista or Windows 7 in the following scenarios:
- Scenario 1: You recently set a new password for the protected administrator account. However, you do not remember the password.
- Scenario 2: You type the correct logon password. However, Windows Vista or Windows 7 does not accept the password because the system is corrupted.
- Scenario 3: You delete a protected administrator account. Now, you cannot log on to another administrator account.
- Scenario 4: You change a protected administrator account to a standard user account. Now, you cannot log on to another administrator account.
"What to do if you forget your Windows password"
http://windows.microsoft.com/is-IS/windows-vista/What-to-do-if-you-forget-your-Windows-password
"If you forget the administrator password and don't have a password reset disk or another administrator account, you won't be able to reset the password. If there are no other user accounts on the computer, you won't be able to log on to Windows and will need to re-install Windows."
Cheers.