First of all, if you used to be XP, and now modified Windows 7, there is a phenomenon of dropped calls, then
the first step, re-download and update your network card driver, if it is a brand machine, go to the manufacturer's official website to download.
The second step is to turn off IPv6.
Other students said that they will encounter the problem that dns is not responding, especially here to list the solution of Win7 routing Internet DNS server no response problem:
First, the four symptoms of the problem symptoms
:
1. First you can start - run the input CMD, then enter ping 127.0.0.1
If ping通 indicates that the TCP/IP protocol has no problem, please ping the TCP/IP protocol
2. Then ping yourself The default gateway (default gateway) The default gateway can be entered into ipconfig /all to view the ping pass. The routing settings are no problem. The ping nowhere should be the routing problem.
3. The network diagnosis says that the DNS server can't connect. This may be the problem of the school DNS server. If other students can access the Internet, do you forget to change the DNS domain name server to automatically obtain it? If other students can't contact the school, tell them that the DNS server has a problem.
Say 2: (ARP attack status)
Solution One can restore the Internet after running the command arp-d in the MS-DOS window.
Solution 2 First, you first install the ARP firewall, and the second delete the C:WINDOWSsystem32 NPPTools.dll system file.
Say 3:
In fact, the compatibility of the VISTA system itself is very poor and some system programs have automatic identification function.
The computer of the general VISTA system will connect to the local network and the Internet. The result of using WINDOWS network diagnosis for diagnosis is that it cannot communicate with DNS (server number), and there is a certain gap between the data sent and received by the data packet....Now general computer maintenance personnel are Unable to solve.
When set to IP address, etc. are all automatically acquired. The network status is sometimes connected. But sometimes I can't connect....
These are like Internet access for a few days, but after a while, I can't connect to the Internet at all. It looks like a similar problem: when the computer shows only local, you use network diagnostics to diagnose and Fix to see if this problem has been fixed? If you can't do it, go back and reset the IP on the host computer, then manually set the IP address and so on your computer....and see if it is connected...
No more calls can be made to the brand. Computer after-sales maintenance personnel give some guidance to them.
Say 4:
The system takes into account more security issues. Your IP settings are automatically obtained. In fact, the IP and related parameters are obtained from the DHCP server, but this process may not be completed for some reason. In the SP1 era, in this case, the operating system in order to prevent off-network (Microsoft wrote this), self-proclaimed to set the reserved IP of 169.xxx for the network card, without any error prompt, if more than one computer does not get the correct IP, Then they can communicate with each other by retaining the address.
But after installing SP2, the operating system does not assign any IP according to the principle of security first, cuts off the network connection, and reports that the local connection is restricted or not connected.
The general situation is that the network card can not be bound by IP, sometimes the repair can be solved, but often the repair does not work, the reason is more complicated, generally caused by the network, and the system or the computer itself has no relationship, Now list the methods for troubleshooting:
Second, 8 methods for troubleshooting and troubleshooting
Method 1:
Open the control panel network connection, find the current local connection, right click on it, select properties, in the general options Double-click the Internet Protocol (TCP/IP) in the card, select the IP address below, fill in the 192.168.0.1 in the IP address, fill in the 255.255.255.0 in the subnet mask, do not fill in the other, and then click OK to solve the problem. . (If the current computer joins a workgroup or domain, it should be set according to the situation).