Subwoofer problems please help!?

Alright so I have 2 15 boss subs. with a 1800 watt amp. I would bang them perfect everyday every time i drove. Well one day I was coming home from work banging them like nothing, i turn off my car go inside and go to sleep. same routine. well the next morning i woke up i turned on my car and turned up my music waiting for the bass to hit but it didn't hit. I stopped and thought my subs were stolen because they didn't make any noise. I went and checked and everything was the same as usual. the amp has a red light protector and goes green when it's safe and ready to go, but when everything is actually plugged in the red light doesn't show up at all, but when i unplug the ground the red light comes on. What is this? blown amp, fuses, subs blown, wires, etc.? I get the general idea of what all it could be but what's the most probable cause?