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What to do if you forgot windows password

steps:

  1. Boot from DVD
  2. Find the drive letter of the partition where Windows is installed. In Vista and Windows XP, it is usually C:, in Windows 7, it is D: in most cases because the first partition contains Startup Repair. To find the drive letter, type C: (or D:, respectively) and search for the Windows folder. Note that Windows PE (RE) usually resides on X:.
  3. Type the following command (replace “c:” with the correct drive letter if Windows is not located on C:):
    copy c:\windows\system32\sethc.exe c:\
    This creates a copy of sethc.exe to restore later.
  4. Type this command to replace sethc.exe with cmd.exe:
    copy /y c:\windows\system32\cmd.exe c:\windows\system32\sethc.exeReboot your computer and start the Windows installation where you forgot the administrator password.
  5. After you see the logon screen, press the SHIFT key five times.(super important)
  6. You should see a command prompt where you can enter the following command to reset the Windows password (see screenshot above):
    net user your_user_name new_password
    If you don’t know your user name, just type net user to list the available user names.
  7. You can now log on with the new password.

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