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What Do the Lights on a Modem or Router Mean?

Use status lights as clues when internet or Wi-Fi is down.

Quick Answer

Identify the exact model and consult its official light/status guide because colors and symbols vary by manufacturer and ISP.

Step by Step

  1. Determine whether the problem affects one device or every device on the network.
  2. Identify the exact model and consult its official light/status guide because colors and symbols vary by manufacturer and ISP.
  3. Change one setting or component at a time and test again.
  4. Record existing router/network settings before changing passwords, DNS, addressing, or advanced configuration.

If That Doesn't Work

  • Router menus, indicator lights, and terminology vary by manufacturer and internet provider.
  • Avoid factory-resetting a modem/router unless you know how it is provisioned and have the information needed to restore the connection.