There are the following methods:

The first method:

Click the windows logo key +L key on the keyboard to lock the screen, and enter the computer boot password to unlock it.

Note: To enable this feature, you need to set a password for the account.

The second method:

1. Right-click the desktop and select Properties.

2. Select "Screen Saver"

3. Select "Use password protection during recovery" and confirm.

Note: To enable this feature, you need to set a password for the account.

The third method:

Install a gadget (or software) similar to the screen hook lock and follow the prompts.

2. Computer password settings

In the process of using computers, we are always dealing with passwords.

If the password you set is guessed or deciphered by others, then important information and personal privacy will be leaked. Therefore, how to set a safe password is a major event that concerns everyone.

Let's introduce you to ten catch-up rules that must be observed in the process of setting passwords. First, the longer the better. Generally speaking, when setting a password, it requires no less than 6 digits.

It can be seen that passwords below 6 digits have been cracked. From the point of view of password cracking, the most common method is violent cracking. A typical feature of brute force cracking is to arrange and combine the possible characters mathematically, and experiment one by one until the correct password is found.

If you increase the number of digits, friends who know about mathematical permutation and combination will know how many permutation and combination opportunities will be generated with each increase of 1 digit. Therefore, the longest possible password is the first rule we should follow.

Even if more than 6 characters are reused, it will increase the difficulty of decoding. Second, as unfamiliar as possible. Many users like to use their name, nickname, date of birth, telephone number or other words with high frequency as the content of passwords.

As we all know, contradictions often arise from the inside, and within the company, this information is often well known. So when you enter the password, others can guess the content of the password with a little attention.

So if you are worried that your password is not easy to remember, you can add some characters that only you know before and after the password to avoid confusion. Third, use as many complicated and simple numbers and letters as possible, or even reuse one character, so that although the password has a long number of digits, it seems difficult to crack.

In fact, simple numbers and characters are easy to decipher. So when we set the password, we should include letters, numbers and various symbols. If case is sensitive, we should use case alternately, so that the password will be more secure.

Fourthly, when setting passwords from back to front, the common people's habit is to start with A, B, C, D or 1, 2, 3, and the order is small, which is just in line with the cracking order of violent cracking, because it is calculated according to the natural order of letters and numbers. So if we set the first digit of the password to something later, such as z, the probability of cracking will be much smaller.

5. Forgotten passwords require both long passwords and complex passwords. Although it can prevent hackers, it also brings great trouble to your input. It is easy to forget after a long time, which brings inconvenience to use.

Actually, you don't have to worry so much. You can use something you are familiar with when setting, and then add a character before and after the password. At the same time, you can use multiple familiar contents to superimpose, such as your nickname plus the last three digits of your phone number and mobile phone number, and your primary school name plus the last letter of your name. This kind of password is not only familiar to oneself, but also has the purpose of paralyzing others.

Sixth, don't use the same password. In actual use, it is impossible to use passwords in only one place. E-mail, QQ, MSN, forums ... It is extremely dangerous if the same password is used repeatedly everywhere.

Therefore, as long as one of the corrections is deciphered, all the precautions are useless. In the process of setting different passwords, you can add a little flexibility. For example, the password I usually use is Longzhong, which can be set as QQ password and Longzhong Sina password.

7. It is also important to change the password frequently. No matter how complicated your password is, it may be cracked as long as you have enough time. Therefore, it is very important to develop the habit of changing passwords regularly.

In the specific operation process, you can follow your own established rules for replacement. The password we used for the first time was QQ Longzhong. Secondly, I can put qq in the middle and change it to longqqzhong. Third, I can put qq behind Dragon Bell qq and so on.

Eight, don't save the password and set a complicated password, which brings certain difficulty to the input, so many people simply set it to save the password when entering the password. In this way, every time you enter, you don't need to enter, you can enter directly.

This is a very dangerous practice. As long as you download a * viewing software on the Internet, the content of the password will be revealed immediately, so your password is no use no matter how complicated it is; There are even some special tools and software on the Internet, which can separate all kinds of passwords from the cache. Therefore, it is necessary not only to save passwords, but also to clean up various caches and temporary files in time when necessary. Nine, the correct input password input is also a very particular thing.

The correct password input is mainly to prevent your computer from being hit by a Trojan horse, so that the entered password will be forgotten. In this regard, on the one hand, we should always check whether the computer is infected with Trojans and viruses, on the other hand, we should add some skills when entering passwords.

For example, when entering a user name and password, you can enter some other characters at will after entering the user name, and then enter the password, so that others can think that the randomly entered characters are passwords; Enter the password first, then the user name; If you enter an eight-digit password, you can enter the last five digits first, then press the leftmost arrow key, and then enter the first three digits. Another common method is to use mouse input.

Switch to any input method, click the mouse button on the input method status bar, and an analog keyboard will appear on the screen. Click the corresponding character with the mouse to realize input. Ten, self-safety awareness is the most important. There is no absolutely safe password in the world. No matter how you set it, you can't guarantee foolproof.

Therefore, while strengthening the complexity of passwords, we need to enhance security awareness. Only in this way can safety accidents be avoided as much as possible.

3. How to set the computer power-on password?

Flattery doesn't suit me. People have a superior spirit. Although some students answered in detail, I still want to get points, so I took a screenshot for you. Refer to the figure, you can quickly set the power-on password. At the same time, it also sends a mandatory method to set the password. The theme is up to you.

1, first in the start menu, find the control panel.

2. Find the option of a man and a woman icon in the control panel, the name is user account and family safety.

XP and WIN7 have similar names. Click in when you see a user or something.

3. After clicking in, you will find a silly manager with a chrysanthemum head. Yes, I'm the manager. Click on him

4. Finally, enter the administrator menu and select Create Password in the circle. Considering that the subject has never created a password, I did not modify the password, but deleted it. Where can I find such a service attitude? Click Create Password.

5. Fill in the new password and confirm it. Trust me, there's no need to make it too complicated for most people to guess. People who want to crack your computer don't need to guess at all. Passwords are used to protect yourself. Hehehe, click Create to succeed. You need to enter a password for the next startup. If you forget your password, drink 95% alcohol. Or write the password in your notebook. Or ask the question again, or ask your neighbor Xiaoming to help you solve it.

6. That chrysanthemum portrait just now was ugly. You can click to change your avatar and change it here. If you are all ugly, or like a DIY picture of ACNiang and Hatsune Miku, you can see lovely sister paper when you open it every day ~ ~

Wow ~WEL mm-hmm

What about the method of forcibly creating users? Group policy. Do it yourself No more screenshots. Drop the bottle, bad review.

I'm here to be funny. Xiao Xi's answer is so comprehensive that people can't help but want to destroy it.

4. How to set a password for the computer

Start-Control Panel-User Accounts-Change Accounts-Select the icon of your own machine-Create a password

This is the simplest.

For Windows XP, there are generally three ways to set the boot password, namely, system user password, system startup password and BIOS password. The setting method is as follows: 1 Methods of setting user passwords in the system: Start → Control Panel → User Accounts → Select your account → Create a password → Enter the password twice → Press the "Create Password" button. If you want to cancel the password, you can enter it directly when you ask for a new password in the second step. Second, the method of setting the startup password in the system: Windows XP can not only set the "user password" in the user account of the control panel to ensure the security of the system, but also provide a safer and more effective "system startup password", which can be displayed before the "user password" when booting, and can also generate a keypad. If you set the "system startup password", the system will be more secure. Windows XP can set the "system startup password" as follows: Click Start Run, enter "Syskey" in the "Run" dialog box (don't enter quotation marks), press OK or press Enter to pop up the "Ensure Windows XP account database security" dialog box, click the "Update" button in the dialog box to pop up the "startup password" dialog box, and select "startup password". To cancel the "startup password" of this system, please follow the above steps, select "System-generated password" in the "startup password" dialog box, and then select "Save startup password on this computer" below. After confirmation, the startup password will be saved on the hard disk, and the startup password window will not appear next time. Before the login screen appears, the "startup password" will be displayed. Only after entering the correct startup password will the login screen be displayed, and the user can enter the user name and login password to log in to the system completely. In this way, the system has double password protection. Third, the method of setting password in BIOS (different machines are different): 1. Press Del to enter CMOS settings, move the cursor to "Advanced BIOS Functions" and press ENTER to open the "Advanced BIOS Functions" page. Find "Security Options" or "Password Check" and set it to "System" (Note: there are two settings for this item, System and Settings. When it is set to System, it will be turned on to enter CMOS setting, and the password must be entered to enter the operating system; When set to Setup, only boot into CMOS settings), press Esc to return to the main page; 2. Move the cursor to "Set Administrator Password" on the main page, enter the password in the window that appears and press enter. Enter the same password again in the window that appears and press enter. CMOS will record the password and return to the main page. 3. Move the cursor to "Save &; Exit and enter, press the Y key, and then enter. Select "Set User Password" in step 2 to set the user password. The difference between user password and super administrator password is that user password can only view CMOS settings and cannot be modified. Among the above three passwords, the system startup password is the most secure, followed by the user password, and the BIOS password is the least secure. Remove the battery on the motherboard to clear the BIOS password; You can also find many ways to crack users' passwords on the Internet. But it is still difficult to find a way to crack the startup password. It is recommended to set the startup password and user password at the same time, which has double password protection. Not only do you have to enter a password when you start up, but you can also press the Windows logo key (the key between Ctrl and Alt) and the letter L key when you leave temporarily to lock the computer (the computer will return to the login screen after locking, and you must enter a support password to return to the normal operation of the system), so that others can't use it.

5. How to set a password on the computer?

The process of password setting: Start-Settings-Control Panel-User Account-Change Account-Administrator-Create Password (Change Password) To cancel the password, just enter the current account password in Change Password, and the new password item is empty. Just click Change Password in the lower right corner.

2. Precautions for password setting: Try to set a password that is not easy to forget, regardless of the length of the password. 3. In order to prevent forgetting the password, you can add users in a way similar to setting the password.

Start-Settings-Control Panel-User Account-Create a new account-Type a name for the new account (it can be your own name or simple English)-Computer Administrator-You can set a password for this new account after the account is created. If you forget it, you can use the original administrator account to enter. In fact, as long as you want to prevent others from entering, you can achieve your goal by setting a simple password, and others can't open it.

I hope I can help you.