Ask the master to answer, the laptop can not access the Internet.

At present, there are a large number of Trojan virus programs to maliciously damage the computers of netizens, tamper with the browser homepage, and modify the DNS server settings at the same time, and resolve the hao and other **navigation stations to other malicious navigation**, such behavior is actually a means of profit for hackers, they maliciously tamper with the user's homepage, hijacking the user's natural traffic has become an important part of the recent illegal profits of the virus Trojan authors. At present, please use the latest version of Kingsoft Guardian to conduct a comprehensive investigation and killing, and you can solve the DNS error problem.

This kind of virus is different from DNS hijacking in the general sense, it first tamperes with the DNS server address of the default network connection, and in the DNS set by the virus, the author resolves the domain name of the hao123, 265, 360 navigation station and other **navigation stations to the wrong IP address, and this wrong IP address is another **navigation station used by the virus author to hijack traffic, and the virus author can also modify the target at will on that specific DNS server** Wanton manipulation of netizens' traffic.

A full disk scan with Kingsoft Guard can perfectly remove the virus and solve this problem!

Tietong's network is not very stable, the network speed is quite poor, it is likely that you have dropped the connection. As for the short IP lease period, I recommend that you use a static IP address so that you can use it for a long time.

It's best to call the network operator**, let them check the network, and then there is to help you adjust, I also use Tietong, which is very good.

It is already connected to the network, which means that there is no problem with the system and the driver:) First of all, you should determine the maximum number of Internet access restrictions when your home is opened, if it is four, when you have been using two computers to access the Internet, then Netcom may default to your home only one computer online, so the other three ports have been turned off. So it can't be online.

This method is easy to solve, you don't say what system you are, you just have the same system as a desktop, and let them re-dial the remote number.

On the desktop: Start -- Run, type: ipconfig all to check the internal network IP and DSN settings.

You can add and modify it accordingly.

My win7 is automatically connected to the router after it is installed.,I don't think it has anything to do with the system.,It's just that the router I'm connected to is running normally.。 You try opening the Network & Sharing Center, select the first one under Change network settings, set up a new connection or network, and follow the prompts. There's only so much to help you, give it a try.

Check to see if your IP is set to get it automatically.

Is it a problem with the network card I guess it's okay to reinstall the system.

I've had this problem before, so I suggest you reinstall your system.