- First, check whether you are using the standard Ethernet cables to connect your network devices like router, modem, and PC.
- Make sure that you have securely plugged the Ethernet cable into the LAN and WAN ports.
- Check the power adapter of the modem as well as the Spectrum router.
- Verify whether you have selected the compatible network frequency in the router settings (2.4GHz or 5GHz).
- Try restarting the Spectrum router to check if the Spectrum router blinking red problem is resolved.
- Unplug the Ethernet cable from the modem first.
- Next, turn off your Spectrum router and the PC.
- Reconnect the modem to the Spectrum router using the Ethernet cable.
- Wait for 2 minutes until the router gets to a steady-state.
- Make sure that you have connected the power cords correctly to the electrical outlet.
- If your modem fails to turn on, try connecting the power cord to a different wall outlet.
- Power on your router and the computer and check if the Spectrum router blinking red problem is fixed.
- If the problem persists, reset your Spectrum router to the factory defaults.
- To execute the hard reset, disconnect the power cord from the modem and take out the batteries.