First, the problem of network setting This reason is more likely to occur in the need to manually specify the IP, gateway, DNS server networking mode, and the use of proxy servers to access the Internet.
Double-check your computer's network Settings.
Second, DNS server problems when IE can not browse the web, you can first try to use the IP address to access, if you can access, then it should be the DNS problem, causing the DNS problem may be the Internet access DNS error or DNS server itself. In this case, you can manually specify the DNS service (the address can be the DNS server address provided by your local ISP, or you can use another DNS server address that can work properly.
In the properties of the network, (Control Panel - Network and Dial-up connections - Local connections - Right-click properties - TCP\/IP Protocol - Properties - Use the DNS server address below).
Different ISPs have different DNS addresses.
Sometimes it is a router or network card problem, can not connect to the ISP's DNS service, in this case, you can turn the router off for a while, or reset the router.
Another possibility is that there is a problem with the local DNS cache.