How can I delete my win7 system account accidentally?

How do I display "you need administrator permissions to perform XX operations" when performing operations on a disk "?

The reason for this tear history is that the author wants to solve the problem that the encrypted disk cannot be attached to the edisk.

Each time a file is pasted to or removed from an edisk, no administrator permission is displayed. For this reason, the encrypted disk cannot be installed on the edisk.

What is puzzling is that the account chenjun is an administrator in the control panel-account management.

Later, I found on the Internet that the cause of this phenomenon was that some security measures were automatically performed during system installation. To solve this problem, you only need to right-click an edisk, select attribute-security, and then add a series of permissions to the account or group.

However, at that time, I did not follow this idea, but suspected that my account's administrator identity was wrong. So I checked my account from computer-management and found that there was an Adiministrator besides the chenjun account. As a result, the brain was congested and thought it was an account problem. Then, the chenjun account was deleted and the Adiministrator account name was changed to chenjun.

Then the tragedy happened, and there was no available account to log on to the system ......

How can I access win7 without an account or password?

The original account has been disabled, but other accounts cannot enter it. When preparing to reinstall the system, I found the following methods on the Internet:

Step 2: restart the computer, press F8 during startup, and a mode selection page appears. Select the security interface with command line. Then the system jumps to a dos interface.

Step 2: Enter the following command on the command line to create an account and add administrator permissions:

1NET USER abcd/add net localgroup administrator abcd/ADD

Step 2: restart your computer and select the abcd account to enter the system.

[If you forget your password, you can perform step 1]

Step 2: Computer-Management-local users and groups, double-click the original account and select set password.

Delete the account abcd.

How can I recover my deleted account when anti-virus software is installed in the system?

Because only deleting the original account does not delete the account file, it is assumed that the account can be recovered. Sure enough, start-accessories-system tools-system restoration and find that there is a restore point in the morning. This restore point has all the data I need. Then select the restore origin to restore.

However, after the system is automatically restarted, a reminder window is displayed, "anti-virus software is enabled, and the system recovery fails ". Disable anti-virus software and try again.

After inspection, it was found that anti-virus software was not enabled, but the anti-virus process exists. An attempt is made to end the process, but a window prompt is displayed, "the system process cannot be ended ". I tried several methods to kill the process on the Internet, and none of them worked.

When I thought that the security mode was used to access the system without an account, I vaguely felt that I could use the security mode again. Restart the computer and enter the safe mode. Click "Start"> "accessories"> "system tools"> "system restoration" and select "restore origin" in the morning.

At last, my account was successfully restored, ending this tearful history.

Summary

The control page-account management is slightly different from the account displayed in computer-management. The control panel is the main one.

After you accidentally delete an account, you can recover it in security mode without creating a new account to enter the system.

Without an account or password, entering the system will bring security risks to the company. From the security perspective, the company should remove the security mode of office computers from the technical level, or set permissions for it.