Here are some tips you can try if you experience problems with your cable or DSL connection. Connection TCP/IP problems can be really hard to troubleshoot. And sometimes your connection may quit for no apparent reason. This can be frustrating, especially if you’re not sure what to do when it happens.
First, make sure your ISP is not having problems. Cable and DSL modems have a connection light that is on and not flashing when a connection is available. If you don’t see a steady connection light, call your ISP to make sure that the problem isn’t with them. If your modem indicates a connection is available but you cannot get on the Internet, here are some safe and easy tips that we’ve used many times that should help you get back on the Internet fast.
1.Try automated repair. Just right-click on the problem connection in the Network Connections folder and choose Repair.
2. Re-set your router: If you have a home network, the problem may lie with the router or in the connection between the router and your broadband provider. Follow the directions for resetting the router. Most always you can reset your router by unplugging the power cord, leaving the router off for at least one minute, then turning it back on. Routers vary though, so be sure to check your manual.
3. Re-set your cable DSL modem: If you have a broadband connection, the problem may be with the IP address assignment by your ISP. Turn off your cable or DSL modem by unplugging the power cord and leave it powered off for at least three minutes. Plug in the power cord and wait until the modem has cycled though its test cycle. Hopefully, you’ll find that your back on the Internet.
4. Power Cycling: First shut down your computer, then unplug the power to your cable modem, and then unplug the power cord from your router. Wait at least three minutes, then plug the power cord back into your modem and wait for the test cycle to complete. Now power-up the router and wait for its test cycle to complete. Finally, boot up your computer. You should be back on the ‘Net now.