To fix an Xfinity router with no lights, check its power connections, test the outlet, then unplug it for one minute before reconnecting it. If it remains dark and unresponsive on a working outlet, contact Xfinity to assess the power cable and arrange a replacement if needed. If your internet still works, check the connection in the Xfinity app and report the dark indicator.
The short version
- Check power first: Test the outlet or power strip with another working device and check the gateway’s power connections.
- Restart once: Disconnect power for one minute, reconnect it, and allow up to 12 minutes for restarting.
- Check your connection: A failed status light can leave the gateway dark while internet service still works.
- Escalate a power failure: Ask Xfinity about replacement if the gateway remains unresponsive after cable and outlet checks.
| Check or action | When to use it | Next step |
|---|---|---|
| Power cable and supply check | No lights and no response | Check connections and test the outlet or strip |
| Different outlet | The gateway stays dark | Connect it to another working outlet |
| Manual restart | The electrical supply works | Unplug for one minute, then reconnect |
| Status light check | Lights return after restarting | Allow about 15 minutes for other color combinations |
| Indicator failure check | Internet works despite a dark light | Check your home connection and report the indicator |
| Xfinity Assistant | Power checks fail or diagnostics remain unresolved | Follow prompts and connect with a live agent |
| Service center exchange | Rented equipment needs replacement | Confirm eligibility and arrange an exchange |
| Shipped replacement | Your gateway is approved for replacement | Request shipment and a delivery estimate |
| Xfinity app download | You need the app | Use the official app download page |
| Whole-home diagnostic test | A compatible rented gateway has power | Follow the test’s recommendations |
| App restart | A rented gateway can receive the request | Allow up to 12 minutes |
| Equipment and account checks | Power returns but service still fails | Check coaxial connections and payment status |
| App outage check | You need your location’s outage status | Open the reported outage details |
| Website outage check | You need to check or report an outage | Check the map for your address |
| Browser troubleshooting | Connection problems continue without a reported outage | Sign in through Xfinity Support |
| Replacement activation | Your replacement gateway has arrived | Complete setup in the Xfinity app |
Check the power cable and electrical outlet
Check the gateway’s power-cable connections and make sure they are secure. Test the electrical outlet or power strip with another device you know works. This checks whether the gateway’s power supply is working before you move on.
Connect the gateway to a different working electrical outlet if it remains dark. If the supply works but the gateway still has no lights and does not respond, ask Xfinity to assess its cable and gateway. A reported area outage does not remove the need to investigate this power failure.
Disconnect power and restart the gateway
Internet and Xfinity Voice calling, including emergency calling, are unavailable during the restart. Disconnect the gateway’s power cable, leave it disconnected for one minute, then reconnect it. Allow up to 12 minutes for the gateway to restart.
Xfinity defines an unlit gateway status indicator as off, while steady white after activation means normal operation. If the lights return with another color combination, allow about 15 minutes for the connection to finish. Contact support if it does not finish connecting.
If the gateway remains completely dark and unresponsive after restarting on a working outlet, move to the support and replacement steps below. The app’s restart command cannot electrically power on a dead gateway.
Check whether only the indicator has failed
If you can still get online despite the dark light, verify that your device is connected to your own home network. Open the Xfinity app and select WiFi to inspect the connection status. Xfinity says a failed LED can leave your internet connection functioning.
Report the dark indicator to Xfinity even if service works. Explain that the light stays off while your home connection works, so support can assess the indicator. Xfinity suggests replacement to restore the light’s usefulness for diagnosing problems.
Ask Xfinity to assess or replace the gateway
If cable checks, a working outlet, and a manual restart leave the gateway dark and unresponsive, contact Xfinity for an equipment assessment. In the Xfinity app, select Services > Ask Xfinity Assistant. Alternatively, open Xfinity Support and select Chat with Xfinity Assistant.
Sign in only through Xfinity’s own app or website, and never share a code, password, or remote access with someone who contacts you. Sign in to Assistant, select Troubleshooting help, then choose Internet. Follow the diagnostic prompts and connect with a live agent if the issue remains unresolved.
Explain that the gateway has no lights after checking its power connections and trying a working outlet. Remote diagnostics require a responsive gateway, but getting support does not. Ask Xfinity to assess the power cable and confirm your equipment’s replacement eligibility.
For rented equipment approved for replacement, you can take it to a local Xfinity service center for an exchange. Use Xfinity’s store locator and the location’s details to arrange an appointment if desired. Alternatively, request a shipped replacement through support and obtain the current delivery estimate when arranging it.
Use the app when the gateway has power
Once power is available, use the Xfinity app to investigate continuing connection problems. If you need the app, open the official Xfinity app download page and select Download the App to reach the applicable store listing.
For a compatible rented gateway, sign in with a Primary, Manager, or Member Xfinity ID. Select WiFi > Troubleshoot, then tap Test your whole home network. Follow the recommendations from the test.
The whole-home test excludes the DPC3939 and X5001 models, and an unpowered gateway cannot complete the gateway speed test. If your model is excluded, use browser troubleshooting or Xfinity Assistant instead. If the gateway remains unpowered, contact support for the cable and equipment assessment.
For a rented gateway that can receive a restart request, the app also offers a restart. Internet and Xfinity Voice calling, including emergency calling, are unavailable during the restart. Select WiFi > Troubleshoot > Restart your Gateway, then allow up to 12 minutes.
Check service if the lights return
When the gateway has power but service still fails, check the equipment connections and tighten the coaxial connectors at the gateway and wall. Check payment status by selecting Manage billing in the Xfinity app or opening the Billing tab on Xfinity’s website. These checks address continuing service problems after power returns.
Sign in to the Xfinity app to check for an outage affecting your location, then tap View outage details when an outage is reported. For the website route, open Xfinity’s Support page and click View Outage Map. Sign in and select the house icon, or enter your address without signing in. If service is down but the map shows no outage, click Report an outage.
For browser troubleshooting, open Xfinity’s Support page, sign in, and click Troubleshoot. Use another internet connection when home service is down. Online troubleshooting is unavailable while a reported outage remains active.
Activate your replacement gateway
For a supported replacement Xfinity gateway, sign in to the Xfinity app as a Primary user or Manager. Open Account > Set up equipment or devices > Xfinity Gateway or Modem. Follow the connection instructions shown in the app.
When the required readiness lights appear, select Ready to Go!, then tap Check Connection. Set the WiFi credentials and tap Next. Review them, then tap Confirm and Finish Up to complete setup.
This activation procedure excludes the fiber-community arrangement that requires a customer-managed Ethernet router. If that is your setup, use Xfinity Assistant for help with your equipment arrangement.
Frequently Asked Questions
Could overheating explain repeated shutdowns?
If you have an XB6 or newer gateway, overheating can trigger protective automatic reboots. Move your gateway out of enclosed furniture and away from sunlight, heating vents, and hot electronics. Keep ventilation openings clear, avoid carpet, rugs, or blankets underneath, and remove exterior dust with a dry cloth. These steps address overheating rather than failed electrical hardware.
Can you arrange a technician through the Xfinity app?
You can schedule a technician when the app’s diagnostic result offers an appointment. Open WiFi > Troubleshoot in the Xfinity app and follow the flow. If it identifies a problem that cannot be fixed online, use the offered technician-scheduling option.
Why do older instructions refer to a different Xfinity account app?
The standalone app named My Account was retired, and its functions moved to the Xfinity app. Use the current Xfinity app for troubleshooting.
Can you use Xfinity’s light chart for a separate third-party router?
Use Xfinity’s gateway light chart only for the Xfinity gateways it covers, rather than as a universal chart for third-party routers or WiFi accessories. The one-minute power-disconnection restart applies to most third-party modems and routers, but their indicator meanings can differ.