Distance from the router
Incorrect wireless key/password
Outdated adapter drivers
Wireless MAC Address Filtering enabled on the router
Outdated router firmware
Incorrect wireless key/password
Connecting to a secured wireless network requires a Password. It is case-sensitive so make sure to enter it correctly. If you are unsure about your wireless password, check your router's label for the Network Name (SSID) and Password.

NOTE: In cases where you changed your router's Network Name and Password, you may need to log in to your router's web-based setup page to verify these settings. For instructions on how to do this, click here.
Your computer's wireless adapter performs better if the drivers are up-to-date. Wireless adapter's compatibility with Wireless-AC, N, G, A or B standards should also be considered. Contact your hardware manufacturer for complete specifications of your wireless adapter.
NOTE: Check the connectivity of other wireless devices within the network. The router should be working fine if all other devices have good wireless connectivity to the network.
QUICK TIP: To isolate the wireless connectivity issue, you can try connecting your computer to other wireless networks like in a friend's house or a coffee shop.
Belkin routers have a feature called MAC Address Filtering which allows you to specify the wireless devices you want to permit on your wireless network. You may need to add the MAC Address of your computer or device to the router's MAC Address Filtering list because this feature will only allow registered devices to connect to the network. To know how to do this, click here.
Firmware updates can fix issues on a router. If all of your wireless computers and devices have problems connecting to the wireless network, you may need to update the router's firmware. For step-by-step instructions on how to do this, click here.