Rescue method after losing the boot password.
What should I do if I forget the boot password set by the BIOS? It doesn't matter, there is always a solution. From where? Since the 586 computer, there has been a BIOS password shielding jumper on the motherboard. As long as you find this jumper and follow the instructions, you can easily unlock the password. But what if your computer is 486? Don't lose heart, check the BIOS of the motherboard, right? Produced by the prize company, if you have it, you may wish to try the following password: (1) syxz; (2)eBBB； (3)h996； (4)want girl； (5) Ruling. Please pay attention to case.
2. How to crack the password when the desktop computer is turned on by a virus?
Hello, if a virus causes your computer to be asked to enter a password when it is turned on, and a strange user name appears, you can prepare a USB flash drive, and use the software management of Tencent Computer Manager to download the startup disk making tool of Laotao USB flash drive on other normal computers to make a bootable USB flash drive.
On the computer, after entering the BIOS settings, find the menu of advanced function settings or startup or start, find the item that sets the startup sequence, set USB-HDD or removable device as the first startup item, insert the manufactured bootable U disk, press F 10 to save and exit. After restarting the computer, select Run Windows Login Password Cracking menu in the WINPE startup menu that appears to clear the administrator user password, or restart the computer to see if it can boot into the system after resetting the password.
If possible, it is recommended to use a computer housekeeper and click the kill button in the "Antivirus" tab to kill the virus. Tencent computer housekeeper enterprise platform: /c/ housekeeper/.
3. The computer is locked after the virus is turned on.
First of all, computer passwords are divided into windows passwords and BIOS passwords.
If you forget the WINDOS boot password, there are two most common methods:
The first method: Press F8 to enter the "Safe with Command Prompt" mode after booting, enter "User+User Name+123456/ADD", and force a user's password to be "123456".
The second type: you need a boot password when booting to the WINDOS login screen: you only need to buy a GHOST CD (usually in the computer city, one in 5-8 yuan), set the CD as the startup item, and a menu will appear when booting. In this menu, there is a tool called WIN user password cracking (Chinese version) (some are also called system password cracking). Click this tool to crack it. (Some GHOST CDs, this tool is in WINPE, you can find it when you enter PE), this method is the most practical, try it all.
If it is the BIOS startup password,
1. Open the chassis, find the clear CMOS jumper and clear it.
2, you can also play CMOS battery, unplug it, and short-circuit the two poles on the battery slot.
3. If you are familiar with the debug command, you can also use it to clear it.
4, you can also use a good PE boot disk, the boot disk has a clear CMOS password option, after startup.
4. What if the computer is locked by a virus?
In this case, you can try the following methods, and the specific unlocking steps are as follows:
1. Restart the computer, press and hold the F8 key until the advanced options screen appears, then release your hand, select "Command Prompt in Safe Mode" and enter.
2. At the end of the running process, the system lists the selection menus of system super user "Administrator" and local user "* * * * *", and clicks "Administrator" to enter the command line mode.
3. Type the command: "user * * * 123456/add" to change the password of "* * * *" user to "123456". If you want to add a new user here (for example, user name is abcdef and password is 123456), please enter "user abcdef 123456 /add". After adding, you can use the "local group administrator ABCDEF/Add" command to promote the user to the "administrator" of the system management group, so that he has super rights.
4. Restart the computer and select the normal mode to run. You can log in the user "* * * * *" with the modified password "123456".
My computer was infected by a virus, and the power-on password was forcibly set. I don't know what to do now.
The steps are as follows: use the "userabcd/add" command to add a user named abcd, use the "Local Group Administrator abcd/add" command to promote user abcd to administrator, restart the computer, log in as abcd, and finally modify the password of the user who forgot his password.
If the user you entered does not exist (xpuser0 1), the system will automatically add the user. 4. In addition, you can use the command "1 OCA 1 group administrator xpuser0 1/Add" to promote the user xpuser0 1 to super user, so that you can have all permissions. 5. The last step is to restart the computer, enter the new password just changed in the login window, and log in successfully. If you are worried about losing your login password, please try this method. XP boot password can be cracked without software. Try the following aspects.
After logging in to Windows XP in safe mode, press Ctrl+Alt+Del.
The Windows Security window will appear. Click the "Change Password" button in the options to open the password change window. In this window, back up the password of the current user, click the "Backup" button in the lower left corner to activate the "Forgot Password Wizard" and follow the prompts to create a password reset disk.
If you enter the wrong password in the login window of Windows XP, the Login Failed window will pop up. If you really don't remember what your password is, you can click the "Reset" button to start the password reset wizard. You can reset your password and log in to Windows XP through the password reset disk you just created.
6. The virus in the computer is locked. How to decipher the password?
Method one
What should I do if I forget my computer power-on password? If the user name Administrator does not appear on the interface at boot time, press and hold it in this interface state.
"Ctrl"+"Alt" key, and then press "Delete" key twice in succession. At this time, a classic windows login interface will appear. The user name is Administrator and the password is empty.
Method 2
1. If the system can't log in, but DOS is either one-click recovery, or MAXDOS, etc. Have been installed, you can directly restore the system with one click. Press the up and down keys to appear within 5 seconds when starting the machine, and then press enter to restore directly with one key.
2. Use the windows password cracking tool that comes with the CD, set the bios to CD startup, and change the first boot device to dvdcdrom.
Yes, then restart OK to enter the CD, and click to crack the password!
Method 3:
1. Restart the computer, press and hold the F8 key until the advanced options screen appears, then release your hand, select "Command Prompt in Safe Mode" and enter.
2. At the end of the running process, the system lists the selection menus of system super user "Administrator" and local user "* * * * *", and clicks "Administrator" to enter the command line mode.
3. Type the command: "User * * *123456.
/add ",forcibly change the password of the user" * * * * "to" 123456 ",if you want to add a new user here (for example, the user name is abcdef and the password is 123456).
Please enter "user abcdef 123456 /add", and you can use "local group administrator abcdef" after adding.
The /add "command promotes the user to the system administration group" administrators "with super privileges.
4. Restart the computer and select the normal mode to run. You can log in the user "* * * * *" with the modified password "123456".
Method 4
Install CD-ROM repair system with Windows xp system to crack the password of supercomputer administrator.
Step 1: Set the system to CD startup, and insert the system installation CD. When the first selection interface appears, press Enter. When the second selection interface appears, press the "R" key to start maintenance and installation. Then the installer will check the disk and start copying files. After the file is copied, the system will automatically restart.
Step 2: After restarting, the system will enter the graphical installation interface.
Step 3: Type "Lusrmgr.msc" in the command prompt window and press enter (excluding the double quotation marks) to open the local user and group management tool. Click "User" on the left, then right-click the administrator account on the right and select "Set Password".
A warning window will pop up to the effect that some information in the system will not be accessible after changing the password. This mainly refers to the files encrypted by EFS, and the certificates have not been exported before, so these files will not be accessible after changing the password.
If there is no such file, I will ignore it, just click "Continue", then enter a new password, click OK, and then close the "Local Users and Groups" and "Command Prompt" windows to continue the repair and installation. After installation, the system administrator account is "activated" again.
Method 5
If it is a CMOS password, please forget:
Pull out the battery of the motherboard, and install it in 10 minutes.
Cancel CMOS password without discharging:
1. Run and enter CMD to open the command prompt, and enter debug to enter.
2. Enter "O 70 10" and press enter (note: English O is entered, not the number 0, there is a space between O and 70, and there is a space between 70 and 10).
3. Enter "O 7 1 10" and press enter (note: the input is English o, not the number 0, there is a space between o and 7 1 and there is a space between 7 1 and 10).
4. Enter "q" and press Enter.
5. Restart the computer, and the CMOS password has been cleared (the double quotation marks above have not been entered).