Win7 boot password forgot how to do

At present, more and more users use the win7 system. Compared with the XP system, the security level of the win7 system is also higher. Then, when using window7, after setting the password on the computer, will there be a situation in which you accidentally forget the power-on password after booting? How to retrieve the window7 power-on password? This solution is not the same as the XP system solution.
The easiest way is: when booting to the welcome interface, the prompt box for entering the username and password appears. Press Ctrl+Alt+Delete to jump out of the account window, enter the username: administrator, and press Enter.
If the administrator account also has a password, then you can do this:
Press F8
when the win7 system starts. Select the security mode with the command line.
Select “Administrator>Bounce out“Command Prompt”Window
Add User: net user asd/add
Up Administrator: net localgroup administrators asd /add
Restart, select asd to enter
Control Panel----User Account---- Forgot the password of the user--delete the secret? In addition to the above, there are two common cases of forgetting the win7 system password:
First, forget the password, but already logged into the system.
This situation is relatively simple to solve, first enter ”mmc.EXE” in the search box in the start menu, or press and hold Win+R, open the run window input “mmc.EXE”, click OK to enter Console. Open ”File”-”Add/Remove Snap-in", find ”Local Users and Groups in the Available Snap-in on the left, click ”Add”-”Done”, Click ”OK”. Expand the local users and groups in the console root node, select ”user”, right click on the right user name, > set password”, there is no need to enter the original password.
Second, forget the password, can not log in to the system.
1 find a PE disk to start the computer
2 After entering PE, go to c:windowssystem32
(1) Change the owner of Magnify.EXE and cmd.EXE to:administrators
(2) Change Magnify .exe and cmd.exe permissions for full control
(3) rename Magnify.EXE to Magnify.EXE1 rename cmd.exe to Magnify.EXE
3 change password
(1) reboot to windows 7
(2) Enable magnifying glass
(3) The rest is very simple, enter the command "net user” to view the user name, and then enter the command "net user username new password” (Activate the administrator account using net user administrator /active:yes) Finally, close the command prompt window, enter the new password you just set in the login password box, and see if you have successfully entered the system! Finally, don't forget to change the previously moved and renamed files back!