In order to protect the security of their computer data and personal privacy information, many people usually set their computer boot password. But I don't know how to cancel after setting the password? The following is the method of canceling the computer boot password I sorted out for you. I hope it is useful to you!
1. Cancel user account password
Click "password of the current user" in the control panel, and then click "delete password of the current user" to open the dialog box, and then click "delete password of the current user".
Another method is to right-click "my computer", select "management", then expand "local users and groups", select "users", right-click the corresponding user on the right, select "set password", then leave the input box blank, and directly click "OK" to cancel the computer startup password.
2. Cancel the system startup password
The system startup password will appear when the system is loaded, which is equivalent to that the computer has two layers of password protection. Click "start", select "run", enter "syskey" and press enter. At this time, the dialog box "ensure the security of Windows XP account database" will pop up, and click the "update" button. In the "startup password" dialog box, select "password startup" and enter the set password.
If the "system generated password" option is selected, the system does not need to enter a password at startup. The system startup password is a password loaded before the operating system is up, which is displayed before the user account password. Enter "syskey" during operation, select "update" in the pop-up dialog box, then select "system generated password" and "save password on this machine", and click OK.
3. Cancel BIOS boot password
When the computer is turned on, press the Del key (generally press the F2 key in notebooks) to enter the CMOS setting, move the direction key, select "advanced BIOS features" enter, and select "security option" or "password check".
Press enter to pop up the interface for entering the password. Finally, press F10 to save and exit, so that the BIOS boot password can be set. After entering CMOS, set "set supervisor password" to "disabled". If there is no way, you can buckle the battery on the motherboard and wait for a while. In this way, the BIOS boot password will be automatically cancelled and the motherboard time needs to be reset.
First: system user password setting. First click start in the lower left corner, click control panel, select user account and family safety, then select create windows password, enter the system setting password you want to set, and click create password.
Start → control panel → user account → select your account → create password → enter the password twice → press the "create password" button.
If you want to cancel the password, just press enter when you need to enter the new password in step 2.
Second: system startup password setting. In addition to setting the "user password" in the user account of the control panel to ensure the system security, the windows7 system also provides a more secure and effective "system startup password", which is displayed before the "user password" when starting up, and can also be generated into a key disk. If you set the "system startup password", you need to enter the password before entering the system to further ensure the system security!
The steps are as follows: click "start" and "run", enter "syskey" (do not enter quotation marks) in the "run" dialog box, press "OK" or enter to pop up the "ensure the security of Windows XP account database" dialog box, click "update" in the dialog box to pop up the "startup password" dialog box, select the radio option of "password startup", enter the password at system startup below, and press "OK". Start - run, enter "syskey" - press enter - click "update" - select the password to start - enter the startup password and confirm.
To cancel the "startup password" of the system, click the above operation, select "system generated password" in the "startup password" dialog box, and then select the following "save startup password on this machine". After confirmation, the startup password will be saved to the hard disk, and the startup password window will not appear at the next startup.
Third: password setting in BIOS. After power on, press del to enter CMOS settings, move the cursor to "advanced BIOS features" and enter. Open the "advanced BIOS features" page and find "security option" or "password check", Set it to "system" (Note: this item has two set values: system and setup. When it is set to system, the password must be entered when starting up and entering CMOS setting and operating system; when it is set to setup, the password must be entered only when starting up and entering CMOS setting), press ESC to return to the main page.
2. On the main page, move the cursor to "set supervisor password" and press enter. Enter the password and press enter in the window that appears. Enter the same password and press enter again in the window that appears. CMOS will record the password and return to the main page.
3. Move the cursor to "save & exit" on the main page, press y, and then press enter.
In step 2, select "set user password" to set the user password. The difference between the user password and the super administrator password is that you can only view and cannot modify the CMOS settings with the user password.
Among the above three password protections, the system user password and system startup password are recommended to be used at the same time, while the BIOS password can be cleared by unplugging the motherboard. When we leave, we can lock the computer by pressing the windows logo key (the key between Ctrl and ALT) and "L" at the same time, so that others need to enter the user password to use your computer.
I. computer settings
1. Close "file and print sharing"
File and print sharing should be a very useful function, but it is also a good security vulnerability for hackers when it is not needed. So we can turn it off when there is no need for "file and print sharing". Right click network neighborhood, select properties, and then click file and print sharing to remove the check boxes in the pop-up file and print sharing dialog box. Although "file and print sharing" is turned off, it can not ensure security. We also need to modify the registry to prohibit others from changing "file and print sharing". Open the registry editor, Select the "hkey_cur_rent_user \ software \ Microsoft \ win windows \ CurrentVersion \ policies \ network" primary key, and create a new key value of DWORD type under the primary key. The key value is named "nofilesharingcontrol", and the key value is set to "1" to prohibit this function, so as to prohibit the change of "file and print sharing"; the key value is "0" to allow this function. In this way, in the "properties" dialog box of "network neighborhood" File and print sharing "no longer exists.
2. Disable the guest account
Many intrusions further obtain the administrator password or authority through this account. If you don't want to use your computer as a toy for others, it's better to prohibit it. Open the control panel, double-click: user and password:, click: Advanced tab, and then click "advanced" button to pop up the local user and group window. Right click the guest account online, select properties, and select "account deactivated" on the "general" page. In addition, renaming the administrator account can prevent hackers from knowing their administrator account, which will ensure computer security to a great extent.
3. It is forbidden to establish an empty connection
By default, any user can connect to the server through an empty connection, enumerate accounts and guess passwords. Therefore, we must prohibit the establishment of empty connections. The method is to modify the registry: open the registry "hkey_lo_cal_machine \ system \ currentcontrol_set \ contro| \ Las", and change the key value of DWORD value "re_strictanonymous" to "1".
II. Install necessary security software
We should also install and use the necessary anti-virus software in the computer. Anti virus software and firewall are necessary. Open them when surfing the Internet, so that our security is guaranteed even if hackers attack us. It is recommended that you install mainstream anti-virus software, such as 360 or Jinshan.
III. close unnecessary ports
Hackers often scan your computer port during intrusion. If a port monitoring program (such as net_watch) is installed, the monitoring program will have a warning prompt. If you encounter such an intrusion, you can use the tool software to close the unused port.
IV. don't reply to strangers' emails
Some hackers may pretend to be in the name of some regular websites, and then make up a high sounding reason to send you a letter asking you to enter the user name and password of the Internet. If you press "OK", your account and password will enter the hacker's mailbox. Therefore, don't reply to strangers' emails casually, even if they say something beautiful and attractive, they won't be fooled.
V. change administrator account
The administrator account has the highest system authority. Once the account is used, the consequences will be unimaginable. One of the common means of hacker intrusion is to try to get ad_ The password of the administrator account, so we need to reconfigure the administrator account.
First, set a powerful and complex password for the administrator account, and then rename adminis_ Trator account, and then create an administrator account without administrator permission to deceive intruders. In this way, it is difficult for intruders to find out which account really has administrator rights, which reduces the risk to a certain extent.
Vi. Hide IP address
Hackers often use some network detection technology to view our host information. The main purpose is to get the IP address of the host in the network. IP address is a very important concept in network security. If an attacker knows your IP address, it is equivalent to preparing the target for his attack. He can launch various attacks against this IP, such as DoS (denial of service) attack, flood overflow attack, etc.
The main way to Hide IP addresses is to use proxy servers. Compared with directly connecting to the Internet, using proxy server can protect the IP address of Internet users, so as to ensure Internet security. The principle of proxy server is to set up a "transit station" between the client (the computer on which the user accesses the Internet) and the remote server (if the user wants to access the remote WWW server). When the client puts forward a service request to the remote server, the proxy server first intercepts the user's request, and then the proxy server transfers the service request to the remote server, so as to realize the connection between the client and the remote server
Obviously, after using the proxy server, other users can only detect the IP address of the proxy server instead of the user's IP address, which realizes the purpose of hiding the user's IP address and ensures the user's Internet security. There are many websites that provide free proxy servers. You can also use proxy hunters and other tools to find them yourself.
VII. Prevent Trojan horse program
The Trojan horse program will steal the swimming information implanted in the computer, so we should also prevent the Trojan horse program from being implanted by hackers. The common methods are:
1. When downloading files, first put them into your new folder, and then use anti-virus software to detect them, so as to prevent them in advance.
2. Check whether there are unknown running items in the "start" → "program" → "start" or "start" → "program" →: startup "option. If so, delete them. Delete all suspicious programs prefixed with" run "under hkey_local_ma_machine \ software \ Microsoft \ win dows \ CurrentVersion \ run in the registry.
VIII. Prevent guest account intrusion
The guest account is the so-called guest account. It can access the computer, but it is limited. Unfortunately, guest also opens the door for hacking! Many articles on the Internet have introduced how to use the guest user to get the administrator's permission, so we should put an end to the system intrusion based on the guest account.
Disabling or completely deleting the guest account is the best way, but in some cases where the guest account must be used, we need to do the defense work through other ways. First, set a strong password for the guest, and then set the access rights of the guest account to the physical path in detail. For example, if you want to prevent guest users from accessing the tool folder, you can right-click the folder and select the "security: tab" in the pop-up menu, from which you can see all users who can access this folder. Delete all users except administrators. Or set permissions for corresponding users in permissions, such as "list folder directories" and "read", which is much safer.
IX. do a good job in the safety setting of i e
ActiveX controls and applets have strong functions, but there are also hidden dangers of being used. Malicious code in web pages is often small programs written with these controls. As long as you open the web page, it will be run. Therefore, the only way to avoid the attack of malicious web pages is to prohibit the operation of these malicious codes.
Ie provides a variety of options for this. The specific setting steps are: "tools" → "Internet Options" → "security" → "custom level". It is recommended that you disable ActiveX controls and related options. There's nothing wrong with being cautious!
In addition, in the security setting of IE, we can only set the Internet, local intranet, trusted sites and restricted sites. However, Microsoft hides the security setting of "my computer" here. By modifying the registry to turn this option on, we can have more choices when dealing with ActiveX controls and applets, and have a greater impact on the security of local computers.
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