How to forget the power-on password

If the computer is used by many people or needs to ensure the security of the computer, the power-on password will be set, but what should I do if I forget the power-on password?

When booting to the welcome screen, press Ctrl+ Alt+Delete, jump out of the account window, enter the username: administrator, enter, if this account also has a password, then:

Press F8

at startup to select <; with command line security Mode”

Select “Administrator"Bounce"Command Prompt”Window

Add User: net user asd/add

l Admin: net localgroup administrators asd /Add

Restart, select asd to enter

Control Panel----User Account----Users who have forgotten the password--Delete the password

First, forget the password, But already logged in to 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 the 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, & rdquo; set password & rdquo;, no need to enter the original password.

Second, forget the password, can't log in to the system.

1 Find a PE disk to start the computer

2 After entering PE, go to c:\\windows\\system32

(1) Change all the Magnify.exe and cmd.exe For: administrators

(2) Change the permissions of Magnify.exe and cmd.exe to full control

(3) Rename Magnify.exe to Magnify.exe1 renamed cmd.exe to Magnify .exe

3Change Password

(1) Restart to Windows 7

(2) Enable Magnifier

(3) The rest is very Simple, enter the command "net user” to view the user name, and then enter the command  quo;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 Previously moved, renamed files have been changed back, this is a serious back door!

4Forgot your password, you can't log in to the system. This situation is more troublesome to deal with, I tried safe mode, Win7 system disk repair, login WinPE, but can not modify the system files, it seems that the previous Vista method can not be used. My method is similar to how to log in to WinPE to modify files. I need an Ubuntu installation CD here, and the version I am using is the 8.10 desktop version. Select CD-ROM to boot, enter the Ubuntu installation interface, select the language, and then enter the first item; try ubuntu without changing ……”. Next, wait for the file to be loaded, the time will be a little longer. After entering the desktop, open the X:\\windows\\system32 folder of Win7, and cut the &aposquo;osk.exe” here to another location, which will be “cmd.exe&rdquo ; renamed to ”osk.exe”, and then restarted from the hard drive. Go to the Win7 login window, click the “Easy Access” icon in the lower left corner of the screen, and then tick ““Start Screen Keyboard” in the pop-up window, click “OK”, and the command prompt is started. It is. The rest is very simple, enter the command "net user” view the username, and then enter the command "net user username new password” 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 to

Ok, the problem is solved. I won’t be afraid to forget the power-on password next time, but remind everyone to avoid trouble or not forget.