How to cancel the computer power-on password

How to cancel the computer power-on password

One: If your system is XP, you can do this in the input password, the user name to: Administrator do not password, if you login interface can not enter the user name, you may even press two times Ctrl+alt+del and then enter the Senior Administrator account (administrators), Then go in and delete the password.

Second: You say the password is divided into two kinds, one is the CMOS password, one is the login password;

Third: About the release of CMOS password is divided into soft lifting, and hard lifting.

Soft lifting: 1: First try the universal password. Because now some well-known manufacturers have universal password.

Large to have "Ami,aword,h996,syzx wantgi awordsw" If these are not managed, use the following method; Enter pure DOS and enter at the prompt: C;>debug

-O 70 20

-O 71 20

-R

-Q

Note: The first O is the letter, the second o is the number, the third O is the number, the fourth is the letter, and the fifth is the number. Enter dos and press F8 after the system starts to enter the Safe Mode with command. If not, you can use the boot disk. If this method does not work, you can also try the following method.

2. When you are ready to boot Windows after the system self-test, press F8 to enter "Safe Mode Command Prompt Only" to enter "alt+179,alt+55,alt+136,alt+216,alt+230 at the DOS prompt". alt+112,alt+176,alt+32,alt+230,alt+113,alt+254,alt+195,alt+

After 128,alt+251,alt+64,alt+117,alt+241,alt+195, press F8 to save the above figures. Note: The number must be in the numeric keypad area, save and exit. Then run yk.com, and then restart the computer.

Hard lifting:

1:cmos discharge. 2: Jumper Short Circuit

Four, about login password:

1: With the special decryption software, now the market, there are a lot of online. I will not introduce.

2: If your system is not patched. That could take advantage of Microsoft's own vulnerabilities. The method is:

In the landing state switch to full spell input method, point its above help-operation guide jump to the URL in the input box input: C:windowssystem32 determined to find the Net.exe file, create a shortcut, and then right-click the Quick key way first its properties. Change the target to: C: Winntnet.exe user NBPRC 123456/add. To create a shortcut in the same way, change its properties to: D:winntsystem32net.exe localgroup Administrators.

3: Make batch file in DOS: Admin.bat content: Net User Administrator 123456 saves it to C:winntsystem32grouppolicymachinescriptsstartup. A) Cancel the power-on password:

1) Run-control userpasswords2

Remove the "To use this computer, you must enter user name and password" before the tick.

2 point "Start"-----"Run"

Enter "Rundll32 Netplwiz.dll,usersrundll" in the box, and then come out the User Account dialog box, remove the Check option "to use this machine, the user must enter a username and password."

3)

Step 1th: Run Registry Editor, expand the [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows Ntcurrentversionwinlogon] branch in turn, and then double-click on the right window DefaultUserName ", then enter your login username. If you do not have a preset user name, you can add this item by clicking edit → new → string value (s) →defaultusername in the menu bar of the Registry Editor, noting that you want to differentiate between uppercase and lowercase letters.

Step 2nd: Also under this branch, double-click the "DefaultPassword" subkey in the right window of the Registry Editor, and then enter your password in the blank column.

3rd step: Next in the right window, double-click "AutoAdminLogon" to set the value to "1". Close the Registry Editor and restart your computer, OK.

Four) cancel the boot landing box:

1) Win98 please use "Windows login" in the network properties;

2) Win2K Please cancel the "User Login required password" option in the Control Panel-user and password-"Users" tab to cancel "user log in Before Ctrl-alt-del" in the "Advanced" tab;

3 win XP just keep a user without a password, the other users are completely deleted