Modem lights flashing but no internet connection
Your modem is trying to sync but something is in the way. Restart it by unplugging for 30 seconds — if lights still flash, check cables or call your ISP.
Flashing lights mean the modem is working hard but struggling to connect to your internet service. This is a loose cable, a temporary glitch, or an issue on your provider's end. We will restart the modem and check the cables first.
Risk: High
⏱ 10–15 minutes
Beginner
⚡ Before you start
- ✓Check that the power cable is firmly plugged into the modem and the wall outlet
- ✓Check that the coaxial cable from the wall is firmly connected to the modem
- ✓Inspect the coaxial cable for damage, bends, or kinks
- ✓Know whether other people in your area are reporting an internet outage
Fix-IT-Bot will walk you through each step, just tap, no typing needed.
Skip, I just want a technicianCommon mistakes to avoid
- Calling for help before restarting the modem. A restart fixes most flashing light issues instantly
- Not waiting long enough after restarting. Modems take up to 5 minutes to fully sync with the service
Signs you need professional help
- If the modem lights are still flashing after you restart it and check the cables, and there is no outage reported, your internet service provider will need to check the line from their end. Give us a call and we will help you get through to them.
Book a technician
We can fix most issues remotely in 15 minutes. Book your weekend slot and we handle the rest.
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