Okay, so I have a Motorola SBG6580 SURFboard modem... When I reset it, the power turns on properly, and it goes through the reset process. The sending light flashes green, then goes solid. The receiving light flashes green, and goes solid. Then the internet light flashes green. However, as soon as that third light goes solid, it disappears, and the previous two lights start flashing simultaneously. The top light (I think its the sending... I;m not looking at the modem right now) is blue during the flashing, and the one below it is green. I've waited hours to see if it would pass and it doesn't... I also tried just unplugging it for a whole night to make sure it got its proper rest time, and that did not work either. (I have a tendency to not leave it unplugged long enough to properly reset.) What is the problem with my modem? This only happened after a technician came to our house...

SOURCE: 'How to fix flashing Power light on modem SB5100?

Check with your server.The registration details have been deleted.

SOURCE: The power light and PC activity light are the only lights that come on. Send/Receive lights don't blink.

the most easy way to connect to the internet is get a bluetooth connetion (zippys) press the tools find device on the bluetooth on ur phone press pair device and press dial up inthe username put ur mobile number and password mobile number dial up number *99# dial

SOURCE: Cannot set up Motorola Surfboard SB5120 modem

This usually means something is not correct with your incoming signal. If your cable wire into the modem is being run off an amplifier in the wall this could be effecting your service. If the signal is too strong the modem won't be able to communicate for internet.

You could check the incoming wire to see if it is running off an amplifier. If it is you would need to run a new line that is not on the amplifier. I would recommend comcast coming out to check the signal frequency and make the necessary adjustments.

SOURCE: Arris cable modem

if the power light is flashing then the modem is on battery backup and internet is disabled. plug the power cord into the modem or find a working power outlet, you should be set after that.

Power light flashing=bad

SOURCE: Power, Receive, Send flashes, No online light or the rest. Help?

Throw it away or send it to Motorola they get very HOT and this causes failure its common in routers and modems