What Does the Red Light on the Modem Mean?
Every manufacturer places a slightly different set of indicator lights on their modems, and the colors of those lights can mean other things from one model to another. Most modem lights tend to be green, and a red light usually indicates a problem or fault. When you see a red light on your modem, it typically indicates:
No cable or DSL signal detected on the line: Your internet may be out, or there may be a connection problem. Failed authentication with your ISP: The modem can connect to the internet, but your account isn’t recognized. Try entering your credentials again if your modem has that option, or contact your internet service provider (ISP). Modem failure: If the power button blinks red and the modem isn’t working, it may have suffered an internal fault. Contact the manufacturer if you own the modem or your ISP if you rent the modem.
How to Fix a Red Light on a Modem
To fix the red light on your modem, you can go through the following troubleshooting steps and attempt each one. If the red light turns off or changes to green or amber after performing one of these steps, check if your internet works. If it does, you don’t need to perform any additional steps. Here’s how to fix the red light on a modem:
