Why can't my computer connect to the Internet?

The reasons why the computer cannot connect to the network include network cable failure, incorrect wireless network password, weak wireless network signal, IP address conflict, DNS server configuration error, firewall blocking network connection, network card driver problem, operating system problem and hardware Failure, etc. Detailed introduction: 1. Network cable failure. If the network cable is damaged or has poor contact, the computer will not be able to connect to the network. You can try replacing a new network cable; 2. The wireless network password is incorrect. If the network is connected through a wireless network, it may It is because you entered the wrong password that you cannot connect. You can re-enter the password, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

There are many reasons why the computer cannot connect to the network. Here are some common situations:

1. Network cable failure: If the network cable is damaged or has poor contact, the computer will not be able to connect to the network. You can try replacing a new network cable.

2. Wrong wireless network password: If you are connecting to the network through a wireless network, you may have entered an incorrect password and cannot connect. You can re-enter the correct password.

3. The wireless network signal is weak: If the computer is far away from the wireless router or blocked by obstructions, it will affect the reception of the wireless network signal and make it impossible to connect to the network. You can try moving the computer's position or removing obstructions.

4. IP address conflict: If multiple computers share the same IP address, an IP address conflict will occur, causing one of the computers to be unable to connect to the network. You can try changing the IP address allocation method in the router settings.

5. DNS server configuration error: DNS is a server that converts domain names into IP addresses. If the DNS server configuration is incorrect or cannot be accessed, the computer will be unable to connect to the network. You can try to manually configure the DNS server address.

6. The firewall blocks the network connection: Some firewall software will prevent the computer from connecting to the network. You need to allow the network connection in the firewall settings.

7. Network card driver problem: If there is a problem with the computer's network card driver, it will also result in the inability to connect to the network. You can try updating the network card driver.

8. Operating system problems: If there is a problem with the operating system, the computer will not be able to connect to the network. You can try to reinstall the operating system or repair system files.

9. Hardware failure: If the computer hardware fails, such as network card damage, router failure, etc., it will also result in the inability to connect to the network. The hardware needs to be sent for repair or replacement.

In short, there are many reasons why the computer cannot connect to the network, which need to be investigated and solved according to the specific situation. You can initially determine the problem by checking the error message, restarting the device, etc., and then take corresponding measures.

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