Many people buy routers to share the resources of two or more computers at home, and often the major driving force behind getting a router is to share a broadband Internet connection. Most routers now come equipped for wired as well as wireless connections. As long as you have a wireless network card in your computer, there's not a whole lot that can go wrong with a wireless connection. You just need to make sure everything is connected correctly and you are close enough to the router.
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Go to the Control Panel and choose "View network status and tasks." Choose "Connect to a network" and any wireless networks available should show up. You can click on one choose "Connect." Instead of choosing to connect, you can also choose the troubleshooter in Windows 7.
Turn the router off for at least 30 seconds and then restart. If that doesn't work, try pushing in the reset button on the router. The reset button usually requires something like a pin to fit in a small hole and then to be pushed in for a few seconds.
Connect a computer to the router with a network cable. Open an Internet browser. Type in the router's IP address and then enter the user name and password for the router. Look at the settings and see if you have WEP and MAC filtering enabled. If you have WEP enabled you will have to enter the correct WEP key on any computer connecting wirelessly. If MAC filtering is on, enter the MAC address into the database of each computer that will connect to the router wirelessly.