no lights on front panel g54

In this case please try using different power cable or use different power outlet to check the LED on the modem and also try performing hard reset on the modem, if still the modem is OFF then you need return to the place of purchase for new modem. Or if the modem is month old please reach out to arris.com/consumersupport. To reset modem  please, disconnect the coaxial cable from the back of the device? At the back of the modem, in the middle section you will see a small hole, inside that hole there is a button, and that is the reset button, please insert a paper clip or a tip of a pen and hold it for 15-30 seconds until all your lights go off, afterwards connect the coax cable back and wait until your device fully boots up.