Netgear AC1900 Nighthawk™ Owner's Manual

You can use the LEDs on the front panel of the modem router for troubleshooting.

Make sure that the power adapter is securely connected to your modem router and 
securely connected to a working power outlet. 

Check that you are using the power adapter that NETGEAR supplied for this product.

When the modem router is turned on, the LEDs light for about 10 seconds and then turn off. If 
all the LEDs stay on, this indicates a fault within the modem router.

If all LEDs are still lit one minute after power-up, do the following:

Cycle the power to see if the modem router recovers.

Press and hold the Reset button to return the modem router to its factory settings. For 
more information, see 

108.

If the error persists, you might have a hardware problem. Contact technical support at 

.

If the Internet LED is off and the modem router is connected to the cable television cable, try 
the following:

Make sure that the coaxial cable connections are secure at the modem router and at the 
wall jack.

Make sure that your cable Internet provider provisioned your cable Internet service. Your 
provider can verify that the signal quality is good enough for modem router service.

Remove any excessive splitters that on your cable line. Run a “home run” back to the 
point where the cable enters your home.

When your modem router cannot access the Internet and your Internet LED is on, register the 
cable MAC address or device MAC address of your modem router with your cable Internet 
provider.