Netgear C3700 – N600 WiFi Cable Modem Router User Manual

The following table provides help when using the LEDs for troubleshooting.

All LEDS are off when the modem 

router is plugged in.

Make sure that the power cord is properly connected to your modem 
router and that the power adapter is properly connected to a 
functioning power outlet. 
Check that you are using the 12 VDC power adapter from NETGEAR 
for this product.
If the error persists, you have a hardware problem. Contact technical 
support.

All LEDs stay on.

Clear the configuration of the modem router to its factory defaults. 
This operation sets the IP address of the modem router to 
192.168.0.1. See 

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

LAN LED is off for a port with an 
Ethernet connection.

Make sure that the Ethernet cable connections are secure at the 
modem router and at the hub or computer.

Make sure that power is turned on to the connected hub or 
computer.

Be sure that you are using the correct cable.

Internet LED is off and the modem 
router is connected to the cable 
television cable.

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

Make sure that your cable service provider has 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 you have on your cable line. 
Run a “home run” back to the point where the cable enters your 
home.

If you cannot access the modem router from a computer on your local network, check the 
following:

If you are using a WiFi connection, check to make sure that your computer or mobile 
device is connected to the correct WiFi network.

If your computer is connected to the modem router wtih an Ethernet cable, check the 
connection.

Make sure that your computer’s IP address is on the same subnet as the modem router. 
If you are using the recommended addressing scheme, the address of your computer is 
in the range of 192.168.0.10 to 192.168.0.254.