A lot of the network issues we see are the "Limited or No Connectivity" issues. Most of the times these issues are simple to solve, however sometimes there's a little trick to it. I will give you some some simple methods to try and fix this problem. If these self-Giúp steps don't work, you can always post on the forum and get more detailed help.
The very first thing to do is try to do a so called 'release/renew' which will renew your connection with the gateway.
The following list will show you how to do so. Go to Start -> All Programs -> Accessories -> Command Prompt (Vista users will have to right click "Command Prompt" and run it as administrator) A black box will appear. Type in: ipconfig /release After it is done releasing. Type in: ipconfig /renew This should renew your connection with your gateway.
If the 'release/renew' steps above don't fix the problem, then you can try something that is referred to as 'Power Cycling' your modem.
To do this do the following: Turn off all computers connected to the router Unplug the power cord from the back of the modem and the router Wait at least 5 minutes Plug in the power cord into the Modem and wait at least one minute for it to initialize Plug in the power cord into the Router and again wait at least one minute for it to initialize. Power on one computer and try to connect to the Internet with it. If the one computer can connect to the Internet, then you can start turning on the other computers one-by-one and checking their Internet connection. | 