Connect to laptop game console or pc with a direct connection to the router. If it powers on but didnt acquire a signal call tech support to see if the can bounce the port depending on your connection and troubleshoot it.

Optimum Sagemcom Router Lights Youtube
Spectrum router blinking red. Ive tried rebooting it as the site says i dont know what else to do. Flashing red red onoff indicates connectivity issues. A pulsing light that alternates blue and red indicates that the router is updating firmware. Download the my spectrum app. Solid blue indicates connected to the internet. The lower front side of the router has a status light that can have the following conditions.
Unplug it from power then unscrew the coax cable. A flashing red light indicates that the router is not able to establish an internet connection. Connect to your home outlet. Everything is plugged in. Connects to the modem. A solid red light indicates that the device was not able to achieve a normal operating state.
Why is it flashing red in battery. The modem is flashing all that stuff on the left and the router is also flashing the red light on the right. I didnt touch anything for it to do this. Blinking or pulsing red disconnected from the internet. Were sorry this browser is no longer supported. But if its off or red in color then its time to check to make sure that the network cable that connects the routers wan internet port often on the back of the router to the modem is plugged.
Pulsing blue blue onoff indicates connecting to the internet. Blinking or pulsing blue establishing the internet connection. Leave it ask unplugged for about 5min then plug it all back in. Fast flashing blue indicates booting up. Were sorry this browser is.