Forgot XP login password? 9 big ways to easily crack

Often friends have responded to Xiaobian: Windows XP operating system is installed, the system login user password is forgotten, and the corresponding emergency disk is not installed during installation. What should I do? For this, Xiaobian After many attempts, find the following ways to solve the problem, these methods are introduced as follows:

Method 1 & mdash; & mdash; use “administrator” (This method applies to the administrator user name is not “ The situation of administrator”

We know that during the process of installing Windows XP, the default is to log in as "administrator", and then ask to create a new account to log in with Windows XP when entering Windows XP, and on Windows XP In the login interface, only the created user account will appear, and “administrator” will not appear, but in fact the “administrator” account still exists and the password is empty.

After we understand this, if you forget the login password, on the login screen, hold down the Ctrl+Alt key and then press the Del key twice to display the classic login screen. At the user name, type “administrator”, the password is empty, and then modify the password of “zhangbp”.

Method 2——Delete SAM file (note that this method only works with WIN2000)

Windows NT/2000/XP uses a secure account manager for secure management of user accounts ( The security account manager (SAM) mechanism, the security account manager manages the account by the security identifier, and the security identifier is created at the same time when the account is created. Once the account is deleted, the security identifier is also deleted. The security identity is unique, and even with the same username, the security identity obtained each time it is created is completely different. Therefore, once an account is rebuilt by a username, it will be given a different security ID and will not retain the original permissions. The specific performance of the security account manager is the %SystemRoot%system32configsam file. The SAM file is a user account database for Windows NT/2000/XP. All user login names and passwords are saved in this file.

Knowing this, our solution has also been created: delete the SAM file, start the system, it will rebuild a clean and innocent SAM, which naturally has no password.

However, such a simple method is not applicable in XP, Microsoft may use this as a BUG, ​​made a restriction … … so now under XP system, even if you delete the SAM, you can not delete the password On the contrary, it will cause the system to start initialization error, and thus enter the infinite loop and can not enter the system!!

Method 3—— Find the password from the SAM file (premise …… will use DOS basic commands)< Br>

Before the system starts, insert the boot disk and go to: C:WINNTSystem3Config Use the COPY command to copy the SAM file to the floppy disk. Get another machine to read. The tool needed here is LC4, run LC4, open and create a new task, and then click “IMPORT→ImportfromSAMfile” to open the SAM file to be cracked. At this time, LC4 will automatically analyze this file and display the user in the file. Name; then click “Session→BeginAudit”, you can start cracking the password. If the password is not very complicated, the result will be obtained in a short time.

However, if the password is more complicated, it will take a long time, then we need to use the following method.

Method 4——Overwrite with other SAM files (provided you can get the SAM file of another computer and its password …… personally think it is the most feasible way)

1—— As mentioned above, the SAM file holds the login name and password, so we just need to replace the SAM file to replace the login name and password.

However, the replacement SAM file should be the same as your system (see FAT32 or NTFS, you can confirm it yourself). It is best that the system of "Place of Origin" has no password, the security settings have not been moved (actually a large part of the PC is like this), of course, the more insurance way is to cover all the files under XP WinNTSystem32Config Go to the C:Win NTSystem32Config directory (assuming your XP is installed in the default partition C:),

2—— if you don't get help from others (I mean "just in case"), you You can install an XP system on other partitions. The hard disk partition format should be the same as the original one, and please be careful not to install the same partition with the original XP! Before starting, be sure to backup the boot area MBR in advance, backup MBR. There are many ways to use tools such as anti-virus software KV3000. After installing it, log in with Administrator. Now you have absolute write permission to the original XP. You can test the original SAM and get the original password with 10PHTCRACK. You can also overwrite all the files under the newly installed XP WinNTSystem32Config to the C:WinNTSystem32Config directory (install the original XP installed here), and then use the KV3000 to restore the former grievous main boot area MBR, now you can log in as Administrator. XP is out.

I have trouble with the No. 2 program, or No. 1: I want someone to help me better ……

In addition, it is said that the SAM in the C:windows epair directory is the original version. You can use it to overwrite this SAM under system32, so you can delete your current password and restore it to the password you just started installing the system. If this password is empty, it is not …… Previous123Next page Total 3 pages