The wireless router that connects your computer and other Wi-Fi enabled devices to your wireless network may experience problems that impede your ability to access the network or connect to the Internet. These problems can include your computer or device not being able to detect your router on the wireless network, not being able to connect to the Internet or your router turning off unprompted. In most cases, a bit of troubleshooting can get your router back up and running, and get you back online.
Computer Cannot Find Router
Connect an Ethernet cable from your computer to the router's LAN port. Click "Start | Control Panel | Network and Internet | Network and Sharing Center | Manage network connections."
Right-click the icon for the network adapter, and then click "Enable." Enter an administrator password or provide confirmation, if prompted.
Reset the network adapter if the above steps do not resolve the issue. Repeat Step 1, right-click the icon for the network adapter, and then click "Disable." Enter an administrator password or provide confirmation, if prompted.
Right-click the network adapter's icon again, and then click "Enable." Enter an administrator password or provide confirmation, if prompted. Your network adapter is now reset.
Router Will Not Connect to the Internet
Unplug the Ethernet cable that connects your router to the modem, and then disconnect the router's power cable.
Disconnect the modem from the Internet connection, and then unplug its power cable.
Wait a few minutes, and then reconnect your equipment beginning with your modem: connect the modem back to the Internet connection, plug in its power cable, and then wait until all the lights on your modem are lit up before repeating the process with your router. Plug in the Ethernet cable, and then the power cable. Once all the lights on your router are turned on, you should be able to connect to the Internet.
Router Is Powering Off Due to Overheating
Ensure that your router's cooling vent is unobstructed.
Use compressed air to clean your router and prevent dust buildup from causing overheating.
Consult your router's user guide to determine if it has energy conservation settings that automatically turn your router off after a set number of hours.
Wireless routers and modems eventually wear out, so if you've tried all these steps but the problem persists, you may have to replace some of your hardware.
Information in this article applies to Windows Vista and Windows 7. It may vary slightly or significantly with other versions or products.