Methods (1)
Restart your computer, start to the system when the login screen, press Ctrl + Alt keys at the same time, the combo Del key twice, then there will be a new login interface, the user name input "Administrator" password is empty, press enter to login, after logging in, open the control panel to choose/user account/change/click on the "account name" of the original/change my password/enter a new password, enter the new password again, and then click "change password" button.
If you forgot a administrator account password, please use the second method or the third, fourth methods.
Method (2)
1, restart the computer, keep pressing F8 key until appear the advanced options screen, then loosen the hand, select "safe mode" command prompt.
2, at the end of the operation process, system lists the super user "administrator" and local users select menu of "* * * * *", the mouse to click on the "administrator", enter the command line mode.
3, type the command: "net user * * * * * 123456 / add" to force the user password "* * * * *" changed to "123456".If you want to add in this new user (such as: user name abcdef, password is 123456), type "net user abcdef 123456 / add", after adding available "net localgroup administrators abcdef/add" command to user promoted to system management group "administrators" users, and make it has a super authority.
4, restart the computer, select normal mode, you can use the changed login password "123456" to log on "* * * * *" account.
(3)
Use Windows xp installation CD, to repair the system, the method of cracking super computer administrator password
Step 1: set of cd-rom start system, and the installation CD into the system.When to appear the interface for the first option and press enter, to appear the interface for the second option after press the "R" began to repair the installation.Then the installer will check disk and start copying files.File copy is completed, the system will automatically restart.
Step 2: after the restart, the system will enter the installation of the graphical interface.Note: at this time should be keeping a close eye on the lower left corner of the interface, once appear, the progress bar "is installing equipment," immediately press the key combination "Shift + F10".Then there will be unexpected, a command prompt window appears in front of us.This is the key to crack the password.
Step 3: in the command prompt window type "Lusrmgr. MSC" and press enter (not including the double quotes), open the "local users and groups" management tools.Click on the left side of the "users" and then right click on the right side of the administrator account and select "set password".At this point, the window will pop up a warning.After the effect that change the password, the system of the certain information will become inaccessible.Here mainly refers to using EFS encrypted file, and has not exported certificate, then change the password after these files will not be able to access.Without this file, I don't have to ignore it, directly click the "continue", then enter a new password, and click ok.Then close "local users and groups" and the command prompt window, and continued to complete repair installation.After complete the installation, the system administrator account to "activate".
(4)
Under WinXP / 2000 countermeasures: delete system installation directory \ system32 \ SAM under the config file, restart, at this time the Administrator Administrator account has no password, log in with Administrator account, need not input any password, enter the system after resetting login account password.
If you forgot a CMOS password:
The motherboard battery clasp, wait 10 minutes then put in back.
Don't discharge to cancel the CMOS password:
1, open “run”type CMD press enter to open a command prompt, enter the debug and press enter.
2, input "70 10 O" and then press enter (note: O is input in English, not the number 0, pay attention to the space key between the numbers).
3, input "71 10 O" and then press enter (note: O is input in English, not the number 0, and pay attention to the space key between the numbers).
4, input "q" and then press enter.
5, restart the computer, has been clear the CMOS password (the above quotes is not needed to input)
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