This problem is not a big problem, but it is also very troublesome to solve.
1. The system has the virus, causes cannot the Internet (rookie best afresh makes the system, because the anti-virus software cannot guarantee all virus's killing).
2. IE browser settings agent (open Browser, point tool->internet option-> connection-> LAN settings, the "For LAN use proxy server" Check out and save the settings. Re-open IE to see if you can surf the Internet.
3. DNS Problems (XP system in the run input cmd into command control line, input ping www. Duote. com If there is a similar "Reply from 18.104.22.168:bytes=32 time=28ms ttl=59" hint that the site can ping, but the DNS settings error, resulting in inaccessible, access network card properties, Modify the DNS address).
Hint: Obtain DNS method, enter CMD in the run, then enter Ipconfig/all can see the following information.
DNS Servers ........... : 22.214.171.124
Where 126.96.36.199 is the primary DNS address 188.8.131.52 is the secondary DNS address. Each machine is located in a different area, and all DNS addresses are different using the network.
4. Check whether the card has an exclamation mark, if there is an IP conflict, resulting in inaccessible, only need to set the network card IP.
IP address is 192.168.0.1 Network code 255.255.255.0 gateway empty.