In daily operations, we often have to input a variety of passwords, such as entering a password when booting, and entering the password first in QQ. If you forget these passwords, It is possible that you can't use the machine, can't open the file, can't chat … … Maybe it will cause a lot of damage! Here we introduce the common password cracking method in computer operation, hope to solve your urgent needs! First, forget the SYSTEM Password If you forget the SYSTEM password in the CMOS settings, you can't start the machine. The solution can only be: open the chassis, remove the battery, short the positive and negative terminals, discharge the CMOS, and clear all the contents of the CMOS ( Of course, including the password), and then reboot to set up. Note: Some motherboards have a CMOS password clear jumper. Please refer to the motherboard manual to short the jumper. This will also clear the CMOS password. Second, forgot the SETUP password Forgotten the password, you can not do CMOS settings. If you can use the computer, but can not enter the CMOS settings, you can solve this problem: start DEBUG in DOS state, and then manually clear the SETUP password by entering the following command: _ o 70 16 _ o 71 16 _ q You can also use CMOS password cracking software To display CMOS passwords, there are many such software, such as Cmospwd, which supports Acer, AMI, AWARD, COMPAQ, DELL, IBM, PACKARD BELL, PHOENIX, ZENITH AMI and other BIOS), start the program under DOS, CMOS password It will show up. Third, forgot the Windows login password WinMe/98 countermeasures: press F8 to select DOS boot after booting, then delete the *.PWL password file in the Windows installation directory, and all personal information files in the Profiles subdirectory, restart Windows The system will pop up a password setting box that does not contain any user name. In this case, you don't need to enter any content, just click “OK", the login password will be deleted. In addition, modify the UserProfiles under the HKEY_LOCAL_MACHINE, Network, and Logon branches of the registry database to “0”, and then restart Windows to achieve the same purpose. WinXP/2000 countermeasures: delete the SAM file in the system installation directory system32 config, restart, at this time the administrator Administrator account has no password, log in to the system with the Administrator account, do not enter any password, enter the system and then reset the login account The password can be. Forgot the Windows screen saver password solution: press F8 after booting, select safe mode to start, after entering Windows, right click on the blank space of the desktop, select “ldquo; property” from the pop-up shortcut menu, and cancel “&ldquo ; password protection & rdquo; 5. Forgot the Windows power management password Windows power management function can also set a password. When this function is enabled, the password will be required when the system returns from the power saving state. If you have forgotten the password, you can use the method of cracking the Windows login password to crack it. Six, forgot the Microsoft Office password solution: use the software to crack the Office series document password, such a lot of software, such as AOPR (download URL http://www.elcomsoft.com/), the software can simultaneously Microsoft Office series Passwords generated by software such as Word, Excel, and Access are cracked, and passwords of Word's *.DOT template files can also be searched. Seven, forgot the WinZip compression package password solution: use the software UZPC (Ultra Zip Password Cracker, retrieve the lost password. When using the software, you must first set the appropriate decryption method, such as “ backdoor mode & rdquo;, & ldquo; exhaustive The way & rdquo;, & nbspquo; dictionary way & rdquo; and "pattern matching method", etc., generally use "Brute Force exhaustive way", then the software will test all possible passwords until the final result is found After forgetting the RAR compression package password and forgetting the RAR compression package password, you can download a CRARK software to crack it. It mainly uses the command line to crack the password of the RAR compression package. Directly use the "CRARK RAR compressed package file name" command, you can use the default parameters to crack. Nine, forget the QQ /ICQ password to protect the QQ password, you should apply for password protection. If you forget the QQ password, Or if the password is stolen, just fill in the correct information and get it back. If you find the ICQ key You can use the software ICQ Password Revealer, which is a command line utility under DOS. You only need to execute the file in the NEWDB subfolder of the ICQ installation folder, and then follow the on-screen prompts to enter your UIN. The system will look for it. Back to “ long-lost & rdquo; ICQ password. Ten, forgot the Outlook Express password If you forget the password, can not enter OutLook Express to read the received mail, use the address book, etc., you can crack: restart the computer and press F8, select &ldquo "Safe Mode", you don't need a password to start OE, then you can rebuild a user (you can't change the password) and import the information into the new user mailbox. 11. Forgot the Foxmail account password Solution: Eliminate the forgotten Foxmail account password. First open Foxmail, create a new account (any account name, such as lacl1), and then quit Foxmail; run Windows Explorer, find the Foxmail\\MAIL\\lacl1 folder, there is an "account.stg" Copy it to an account that has forgotten your password (for example, “lacl”) Direct overwrite the original & ldquo; account.stg & rdquo; file; and then re-run Foxmail, open the forgot password account, Oh, how even & ldquo; password prompt box & rdquo; no? Now you can open the account forgot your password directly, and the original email in the account will not be less! Twelve, view “*” passwords Many passwords are displayed on the screen as “*” Therefore, we can't directly see the original characters of the password. If you use software that specifically cracks the passwords, you can find the original characters of these passwords. There are many such softwares. For example, you can use iOpus Password Recovery under Win2000/Win98 and Password Spectator Pro under WinXP. When using, just open the window that displays “*”, start this kind of software, then hold down the Ctrl key and press the left mouse button in the password bar. The original characters of the password will be displayed. Out.