Router Light GuideUnderstand Your Router. Fix the Problem.

Generic router / no light

Modem online light off

Work from power to service signal, then local network. A light color only makes sense after matching it to the printed label beside the LED.

First read: means the device, port, or feature is off, unplugged, disabled, or not detecting a cable.
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no light

Short answer

Modem online light off

Work from power to service signal, then local network. A light color only makes sense after matching it to the printed label beside the LED.

When the model is unknown, read the LEDs by function first: power, service, wireless, local network, and pairing.

Safe order

Check in this order

  1. Test the wall outlet with another device.
  2. Check the original power adapter rating.
  3. Move Ethernet to a known-good port.
  4. If only Wi-Fi is dark, look for a physical wireless button or app setting.

Light labels

What the nearby label changes

PowerSolid is usually normal. Blinking means booting. Off means no power or disabled LEDs.Check adapter, outlet, and startup time.
Internet / OnlineSteady means service is registered. Blinking or off means the modem/router is still looking for service.Check outage, WAN/coax/fiber, then restart modem first.
Wi-Fi / WLANBlinking can be normal traffic. Off means wireless may be disabled.Check Wi-Fi button, app settings, and band names.
WPSBlinking means pairing window is open. Solid or red can mean failed pairing.Wait two minutes, then pair again close to the router.
Ethernet / LANBlinking usually means traffic. Amber can mean lower speed on some models.Swap cable and test another port.
US/DS / BroadbandBlinking means the modem is trying to lock signal.Tighten coax/fiber and remove splitters before resetting.

Before a factory reset

A reset can erase Wi-Fi names, passwords, port forwarding, and provider activation state. Use it only after power, cable, outage, and startup checks do not explain the light.

When to call support

Call the provider when Online, Internet, Broadband, US/DS, or Optical never reaches a steady normal state after one clean restart and cable check.

When Wi-Fi settings matter

Change Wi-Fi settings only when service lights are healthy but phones, laptops, or smart devices cannot join the wireless network.

Nearby checks

Related light states

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