Sihai network

How to deal with the problem that computers can't access the Internet

The computer network connection display is normal but can't access the Internet. What should I do in this case? The network connection display is normal and can't access the Internet. Let's see the solution!

Our computers are generally connected to the network. If there is no network connection, then our computers will be an isolated dead island. The trouble is that when we surf the Internet, it often appears that the network cannot be connected, the web page cannot be opened, or the network connection is normal but it is unable to surf the Internet, browse the website, or log on QQ.

Xiaofei of a network company moved to the office. She took the network cable of her new desk and connected it to her laptop. After entering the network password, she connected it normally. After the network connection, Xiaofei opened QQ as usual and found that he could not log in. It's also not good to open a browser to visit Baidu's home page. After trying several other large-scale portal websites, it's also impossible to open a web page.

After a long time, I don't know what's going on. It's clear that the network has been connected successfully. How can I not get on the network? Later, he found a colleague who understands the computer. Brother Li found that the network is connected normally. When the network connection is normal, he ruled out the connection problems such as the network cable and plug. It is doubted that it is a DNS setting problem, and then set the property of the TCP / IP protocol of the network connection to obtain the IP address automatically, and then open the web page to find that it can go online.

Solutions for normal network connection but unable to access the Internet:

Analysis 1. As shown in the above example, it is a network setting problem. Setting method: start - control panel - network and Internet connection - network connection - local connection right click attribute - select 'Internet Protocol (TCP /) - click attribute - check' automatically get IP address' to confirm and save.

Analysis 2. If a router is used, and in order to obtain the IP address automatically, it may be an IP conflict in the local area network. Check whether the IP address of your computer is the same as that of other computers in the local area network. The IP conflict requires modifying your IP address. The setting method is the same as above, just select 'use the following IP address', and then input the IP address: 192.168.xx.xx, the latter two Bit self setting, as long as it is not the same as other computer IP in the LAN. The default gateway is: 255.255.255.0, and the subnet mask is: 192.168.1.1. The subnet mask is filled in more automatically, and the last one is customized.

Analysis 3, computer virus, download antivirus software to kill.

Analysis 4. If it is dial-up Internet access, the modem may be broken.

Analysis 5. Broadband arrearage. In the case of broadband arrearage, sometimes you can connect, but you can't access the Internet. Restart the router after payment.

Analysis 6. The router is broken. If the router is used, it may be broken.

Analyze the driving problem of network card and check whether the driving is normal.

Analysis VIII. Browser problems. If the network connection is normal, you can log in to QQ, but you can't get online, which may happen.

Analysis IX. the problem of network firewall. The security level of network firewall is set too high, resulting in the inability to access the Internet. Start - control panel - Security Center - Internet properties - security.

Analysis 10. Other users in the LAN occupy too much network resources. If the router is used, whether other computers are downloading large files leading to extremely low network speed.