Hello,
Troubleshooting the blinking light issue on your Belkin router:
1. Make sure the that router is connected to your modem with an ethernet cable via the router's internet (WAN) port.
2. Unplug the modem from its power source and make sure that it's totally turned OFF.
3. Unplug your router's power supply, wait for 10 seconds and then plug it back in.
Thank You
belkin range extender setup | belkin.setup n300 | belkin n300 setup