Why can t computers access the Internet, and computers can t access the Internet?

You are connected through the local area network, first of all, see if the other computers in your network can be connected to the Internet, if you can't connect to the name of the server or router, if you can't see your IP, gateway, DNS, subnet mask, whether the settings are normal, if they are normal, disable the local connection first, start the local connection after restarting the computer, change the individual IP number, the front number does not need to be changed to the back number on the line, change the question mark (** number range between 1--255, Any number will do. After the change, as long as the network IP is not prompted, it is fine. Then try to see if you can connect to it, if it doesn't work, use the latest version of the antivirus software to kill the virus in DOS, generally do the above procedures can solve the problem, if it doesn't work, it's time to check your hardware connection.

Sometimes the neighbor on the Internet shows that it is connected, but you have to see if the data it sends is not much different from the data it receives.

If the difference is too big, even if it's connected, there will still be the kind of situation you said, and the root cause is the slow Internet speed.

We generally show here that it's okay to send out 569273 accept 668329 haha.

If you can send and receive data, that's the problem of the machine, and if you can only send and can't receive data, that's a topic of mail or cats.

If the dns are set, if there is, it will be set.

No, you can use the 360 Security Guard's "Disconnected First Aid Kit" to try, the disconnected first aid kit has multiple repair options, such as: reset network configuration, strong repair, LSP repair, etc. Use it to see if you can access the Internet.

No, press and hold the "win icon key" on the keyboard, which is the system key, and then press "r" ==" cmd OK, or press and hold the "win icon key" on the keyboard, which is the system key, and then press "x" and then press "a" ==" cmd (run as an administrator, enter the following command line by enter) to try.

netsh int ipv4 reset

netsh winsock reset catalogipconfig /flushdns

ipconfig /release

ipconfig /renew

I didn't see your network card information, the red cross has nothing to do with surfing the Internet, and the sound cannot be output. Open Control Panel - Network & Internet, and click "Change Adapter Settings" to see if your network card is not enabled.