@Anthony_M , Did you check the power supply, respectively does it still work? Is the antenna cable still ok? Are the plugs plugged in firmly and the socket ok, so no loose contact?
Can you please leave your modem unplugged for about 10min and then plug it in again?
Please try a reset again. Press the reset button on the back of the unit for at least 25 seconds with a pointed object. Try it again afterwards.
Greetings
Daniele