Five windows password settings and cracking

In the process of using a computer, it is inevitable to deal with various types of passwords. The following nine types of passwords may be the most popular for everyone: BIOS password, installation password, user password, power management password, screen saver password, boot password, Internet password, hierarchical review password and shared password. Today, let's talk about these passwords that are closely related to us. In this article, we will first talk about the first five frequently used passwords.

　　I. BIOS password　

BIOS (Basic Input Output System) is the Basic Input/Output System. It is actually a set of programs that are solidified into the ROM chip on the computer motherboard, provides the lowest-level and most direct hardware control for computers. Unlike other programs, BIOS is stored in the BIOS chip, rather than in the disk, because it is part of the motherboard, therefore, we sometimes call it a different software or hardware name "Firmware" (Firmware), which is mainly used to store self-diagnostic testing programs (POST programs), The system bootstrap loader, the system setup program, and the I/O Driver of the main I/O device, and the interrupt service program.

If you do not want others to use your computer, you can set the BIOS password function to add a "Lock" to your computer ". What should I do if I forget the BIOS password? Don't worry. The following tips can help you.

Depending on the user settings, the boot password is generally divided into two different situations, one is the SetUP password (In this mode, the system can start directly, however, you only need to enter the password when entering the BIOS settings. The other is the System password (when using this method, you need to enter the password either directly starting or configuring the BIOS, ). For the two passwords set by the user, our attack methods are different:

　　(1) crack the SETUP Password

If the computer can boot normally, but you cannot enter BIOS settings (that is, you have set the SetUP password), you can choose from the following methods:

　Method 1: Dubug Method

After the password is forgotten, you only need to start Debug in DOS state, and then enter the following command to manually clear the password:

_ O 70 16

_ O 71 16

_ Q

In addition, users who are not familiar with Debug can download Cmospwd, a tool dedicated to cracking the CMOS password. Then start the program in DOS, it will display the user's CMOS Password (Cmospwd supports Acer, AMI, AWARD, COMPAQ, DELL, IBM, packard bell, PHOENIX, zenith ami and other BIOS ), easy to use.

Method 2: Software cracking

There are a lot of software that detects the system or boot password. The most common ones are BiosPwds and Cmospwd. BiosPwds is one of the most outstanding ones. It can detect the BIOS version, BIOS update date, administrator password, CMOS password, and password type, and is easy to use, click the "get password" button in the window to display all information detected by BiosPwds.

However, because the software decodes the BIOS-encoded password during password cracking, sometimes the program password may be found to be different from the actual password, which is also a normal phenomenon, so this trick sometimes fails.

　　Method 3: compile your own file to crack

Enter the MS-DOS environment, enter EDIT and press enter under the DOS prompt symbol (if you find an error by pressing EDIT, that is, you do not have the edit.com file, please refer to the next method), enter:

ALT + 179 ALT + 55 ALT + 136 ALT + 216 ALT + 230 ALT + 112 ALT + 176 ALT + 32 ALT + 230 ALT + 113 ALT + 254 ALT + 195 ALT + 128 ALT + ALT + 251 ALT + 64 ALT + 117 ALT + 241 ALT + 195

Note: press the ALT key before entering the above data, and then press the numeric key in the numeric keyboard (the row above the keyboard does not work). After entering a number, press the ALT key again, then press the ALT key. During the operation, there will be a messy character on the screen, so we don't need to worry about it. Then select save under the file menu, save as the Cmos.com file, and then exit to the MS-DOS environment, find the cmos.com file to see if it is 20 bytes, if not, it indicates that you entered an error and you must enter it again. After confirmation, run cmos.com directly. There should be no prompts on the screen, and then restart the computer to clear the password in CMOS. Of course, other settings in CMOS will also be cleared, this requires us to reset the settings.

　　Method 4: DOS cracking

This method can be completed directly in the MS-DOS environment, in the MS-DOS environment input: copy con cmos. press enter and enter the following ten characters: ALT + 176 ALT + 17 ALT + 230 p ALT + 176 ALT + 20 ALT + 230 q ALT + 205 <space>, press the "F6" Key, press enter to save, run the Cmos.com file, and then restart the system.

_ Info. asp? Id = 12392 "width = 1 border = 0> (2) crack the System password

If the computer cannot be started without a password (that is, the System password is set), we cannot solve the password forgetting problem through software. You can use the following methods:

　　Step 1: General passwords

Each motherboard manufacturer has a universal password set for the motherboard for technical support. If we know the general password for this motherboard

Machine, or the CMOS settings can all be "wall-mounted", of course, do not use this to do bad things!

It should be noted that for some reason, the general passwords of the motherboard may be different in different periods. Therefore, this trick cannot be used in the whole world. We only have to try it several times, whether it is useful depends on luck!

Award BIOS common passwords: j256, LKWPPETER, wantgirl, Ebbb, Syxz, aLLy, AWARD? SW, AWARD_SW, j262, HLT, SER, SKY_FOX, BIOSTAR, ALFAROME, lkwpeter, 589721, awkard, h996, CONCAT, 589589.

Awi bios common passwords: AMI, BIOS, PASSWORD, hewitt rand, AMI_SW, LKWPETER, A.M. I.

　Second TRICK: CMOS discharge

Most of the current motherboard uses a cell-button battery to power the BIOS. That is to say, if there is no power, the information in it will be lost. When it is powered on again, the BIOS will return to the unset original state, of course, the BIOS password will be gone.

First, open the computer chassis and find the silver button battery on the motherboard. Remove it with caution, unplug the power plug at the end of the chassis, and use a metal clip to short the spring on the battery base. after about 30 seconds, install the battery.

At this time, CMOS will lose the internal storage information due to power failure. OK! Load it back, close the chassis and start the system, the system will prompt "CMOS Checksum Error-DeFaults Loaded", that is, the system will prompt you "CMOS found an Error during the check, the default value "BIOS password is successfully loaded.

　　Step 3: patch cord transient connection

If the CMOS chip of the motherboard is integrated with the battery, or the battery is directly soldered to the motherboard, the second method "CMOS discharge" is used, and the result does not work, then we need to use the jumper to short answer this trick.

After the chassis is turned on, there will be a jumper switch near the motherboard CMOS battery. Next to the Jumper, there will usually be a reset cmos (reset cmos), clean cmos (clear CMOS), cmos close (CMOS closed), cmos ram reset (CMOS memory RESET), and so on, use a patch cap to short connect, and then jump it back!

Because the Jumper settings of each motherboard are not the same, it is best to check the motherboard manual before using this trick. Forget to mention one thing. Do not discharge or clear the data in CMOS when the system starts up. We recommend that you disconnect the computer power supply.

　　 Ii. Windows installation password

First, let's talk about the installation password. The installation password is the Windows CDKEY, which is required for Windows installation. After the password is entered, it is recorded in the registry. Click "run" under the "Start" menu and enter regedit to open the Registry Editor. You will find that the Windows installation password is in the following position in the Registry: HKEY_LOCAL_MACHINE \ Software \

Microsoft \ Windows \ CurrentVersion \ ProductId and HKEY_LOCAL_MACHINE \ Software \ Microsoft \ Windows \ CurrentVersion \ ProductKey. If you forget the Windows installation password one day, you can check it out here. In fact, this password is not important. It is only useful when Windows is reinstalled. It is automatically recorded after installation. If you want to reinstall Windows without a password, you can check it and record it for future use.

3. User Password

Many people think that the user password is the power-on password. In fact, Windows does not have a boot password by default. What is the user password used? Is used to protect the "personality! The system allows multiple users to be set, not to protect user privacy. Instead, a set of system appearance configurations are saved for each user to adapt to different user habits. Just like the popular "skin", you only need to enter a password. Therefore, this password cannot be kept confidential, but it is just a decoration.

You can set the user password in "password" or "user" on the control panel. In the control panel, double-click the "user" icon and click "new, the "Add User" window appears. Click "Next", enter the new user name, click "Next", and enter the new user password in the displayed window, click "Next". The "personalized settings" window appears. Select the project you want (you can also choose not to select) and click "Next" again, you can add a new user to the local machine. In the same way, create a user name for each user who can use this machine, and then you can enter the password. Of course, you can leave the user to change the password after logging on.

Anyone familiar with Windows knows that in Windows 9X, this password system is insecure. It is started when the system is started or when the user logs in. After Entering the correct password, you can use the system. However, even if you do not know the password, you can use the ESC key to skip the login program and directly enter the system. In this case, you can change the Registry to force the user to enter the user name and password before entering Windows. Implementation Method: click "run" in the "Start" menu, enter regedit, open registry editor, open HKEY_LOCAL_MACHINE \ Network \ Logon in sequence, and create a New DWORD Value, name it "Mustbevalidated" and change the value to 1.

Unlike Windows 9X, Windows 2000 has made great improvements in this aspect. If you set the system to: Users must enter the user name and password to use the local machine, if you do not enter the correct username and password, you cannot enter the system. Users are divided into three types: Administrator, user, and guest, with different permissions. This provides a means to standardize the management of computer users.

In addition, users familiar with Windows 9x systems know that the user password information is stored in files with the extension ". pwl" in the Windows directory. Here is a simple and effective protection method: click "start"> "run", enter the sysedit command, and open "System Configuration Utility ". Select the file System. ini. In this case, you will find that there is an item in the list with the title [Password Lists]. This is the link record about the user Password file, where SSJ = C: \ WINDOWS \ SSJ. PWL (the "SSJ" before the equal sign is the user name and the path and file name of the user's password file after the equal sign ). With this in mind, we can modify it to specify any file. For example, you can upload the source file SSJ. PWL is renamed and copied to another directory. For example, in DOS mode, run the command copy c: \ WINDOWS \ SSJ. pwl c: \ WINDOWS \ SYSTEM \ S1.DAT. Then, change the password file storage path in System. ini to SSJ = C: \ WINDOWS \ SYSTEM \ S1.DAT. In this way, no one can easily find your password file.

What if I forget the Windows User Password? Rest assured, this will not affect the system startup, but it will lead to Users unable to access their own personal settings, so it is also necessary to crack the Windows Startup Password to retrieve the lost "personality. To this end, you can delete *. the PWL password file and all the personal information files in the Profiles subdirectory, and then restart Windows, the system will pop up a password setting box that does not contain any user name, we do not need to enter any content, click OK to delete the Windows Password. In addition, modify the UserProfiles under the HKEY_LOCAL_MACHINE \ Network \ Logon branch of the Registry to "0" and restart Windows to achieve the same purpose.

　Iv. Power Management Password

You can also set a password for the Windows power management function. After this function is set, the system requires a password when returning from the energy-saving status, after that, users who do not know the password will not be able to bring the computer back to normal from the "suspended" status, which further ensures the security of computer data.

To set a password for the power management function on Windows 98, follow these steps:

1. Click

Click "start" and select "Settings"> "Control Panel" to start the control panel of Windows 98.

2. Double-click the "power management" icon in the "control panel" to open the "Power Management Properties" setting box.

3. Select the "advanced" tab from the "Power Management Properties" setting box.

4. When the computer is out of the STANDBY state, enter "√" before the "Enter Password" option ".

5. Select the "power solution" tab in the "Power Management Properties" setting box.

6. In the "system waiting status" list box, select the time interval for the computer to automatically start the power management function (that is, to enter the "suspended" status) after no operation is performed, there are different options, such as "from 1 minute later" to "never". You can choose from them.

7. set an appropriate interval for "turn off the monitor" and "turn off the hard disk.

8. Click "OK" to close the "Power Management Properties" setting box.

In this way, we started the power management function of Windows 98 and set the appropriate password for it. It is worth noting that the Windows 98 power management function password is based on the Windows 98 user password, that is, we must first set the user password for Windows 98, then you can use its power management password function. Otherwise, the password is invalid. In addition, the Windows 98 power management function does not have a separate password, and its password is exactly the same as the Windows 98 user password, which saves the inconvenience of remembering multiple passwords at the same time. However, from another point of view, the password of the power management function is exactly the same as the user password, and it will be very insecure. We only need to follow the previous method to crack the Windows user password, its power management password will not be cracked.

_ Info. asp? Id = 12392 "width = 1 border = 0> 5. Screen saver password

Next, let's talk about the screen saver password. It is mainly used when you leave the computer temporarily and don't want to shut down, and you are afraid that someone will take the opportunity to see what you are doing or drive your computer, at this time, the screen saver password can play a protective role, and it is a little better than the user password reputation than the user password. If the password is incorrect, it is difficult to pass.

Let's take a look at how to set the screen saver password. First, in the blank area of the desktop

Right-click and select "properties" from the shortcut menu. The "show properties" dialog box is displayed, the dialog box contains the following tabs: "background", "Screen Saver", "appearance", "effect", "Web", and "Settings. Click the "Screen Saver tag" to open "Display Properties". The "Screen Saver" drop-down list box in this window contains various Screen Saver programs attached to Windows, after selecting a screen saver, click "preview" to display the screen saver effect. Click "preview" to display the screen in full screen (click the mouse to restore ). The "set" button can be used to set the Display Effect of the screen saver. In the "wait" box, you can enter or adjust the time when the Screen Saver is started. What's more attractive is that screen saver still has some confidentiality functions! If you want others to be unable to use the computer when you leave, the simplest way is to enable the password function of the screen saver and check the "password protection" box, click "change". A "Change Password" dialog box is displayed. Enter the password twice and confirm it.

What should I do if I accidentally forget the screen saver password? Shut down directly? It would be so brutal; and, in case your work is not saved, it would not be a waste! Now, as long as you know the IP address of your machine and use the following method, your problem will be solved!

In fact, the method is very simple. First, you must use another machine as the decoder in the LAN of your machine and change the IP address of the decoder to your IP address, by taking advantage of the high priority of hardware conflicts, the _ blank> operating system can skip the screen saver.

The specific implementation method is as follows:

On this decoder machine, locate "set" in "Start Menu", click "Control Panel", enter "Control Panel", and double-click "network" to go to the "network" dialog box.

Select the "configuration" tab and double-click "TCP/IP". In the "TCP/IP properties" dialog box, select the "IP address" tab and change the IP address of the decoder to your IP address, click OK.

The system will prompt you to restart the computer for the new settings to take effect, confirm and restart the computer.

In this way, the IP addresses of two machines in the LAN are the same. After the decoder is started, a prompt box "Hardware conflict occurs between IP addresses" appears on both your machine and the decoder. Click OK on your machine, guess what will happen? Yes, the system does not require you to enter the password of the screen saver, so you can directly go to the _ blank> operating system desktop!

Now you don't have to worry about forgetting your password, do you? However, during the entire cracking process, make sure that there is no dialog box requesting to enter the screen saver password on your machine. Otherwise, after confirming the hardware conflict, the system will also ask you to enter the screen saver password.

The Screen Protection password of the system is very fragile. After the password is forgotten, we only need to use the "reset" key to forcibly start the computer (some poorly designed Screen Saver can even be forcibly disabled using Ctrl + Alt + Del, and then right-click the blank area on the desktop and execute the "attribute" command from the shortcut menu, open the "Display Properties" setting box, click the "Screen Protection" tab, and then cancel the "password protection" option (you do not need to confirm the password when canceling this option ).

Here is a simpler method. As we all know, the screen protection password can be up to 16 characters. Microsoft has a built-in 16-byte key: 48 EE 76 1D 67 69 A1 1B 7A 8C 47 F8 54 95 97 5F. In Windows, you can use the above key to encrypt your entered password. The encryption process is as follows: first, convert the entered password characters to the hexadecimal ASC Ⅱ code value (lowercase letters are converted to uppercase letters first ), then, the bitwise XOR operation is performed with the corresponding key sequentially. each bit of the hexadecimal value is considered as a character and converted to its hexadecimal ASCII code, add 00 at the end of the Key to the binary key ScreenSave_Data in the Registry HKEY_CURRENT_USER \ Control Panel \ desktop. Delete the ciphertext of the Windows screensaver password under the HKEY_CURRENT_USERS \ ControlPanel \ Desktop \ ScreenSave_Data primary key in the registry!

In addition, there is also a CD dedicated to cracking Screen Protection passwords on the market. After the disc is inserted, it uses the automatic running function of Windows 98 to start the Screen Protection password cracking program stored on the disc, and analyzes and decrypts the password of the screen protection function, the password is displayed on the screen or written to a floppy disk, which is more convenient.

There is another worry about the screen saver password-some friends always like to drum up the computer and often set a password for the screen saver. If it is your own home, if it is a computer in a school room or a street cafe, that is a bit of trouble. Do not worry about the screen saver password. We can block the screen saver password function so that it cannot be set. This will solve these troubles. The procedure is as follows: click "start"> "run", enter Regedit in the "run" dialog box, and press enter to open the Registry Editor, find HKEY_CURRENT_USER \ ControlPanel \ desktop \ ScreenSaveUsePassword (if "ScreenSaveUsePassword" is not found, create the Dword Value by right-clicking "Desktop ", select "new"> "DWORD Value" in the pop-up menu and name it "ScreenSaveUsePassword"). This key determines whether the screen saver uses a password, the key value is 0 or 1. If it is "0", no password is set. If it is "1", the default password is used. Change this value to "0" to disable the screen saver password.