2000 Mobius V- Has run perfect all summer.

The other day while draining the front ballast I tried to turn the engine on and it wouldn't start. The engine cranks but won't start. The dash guages, perfect pass, etc. won't come on and neither will the fuel injection sound. All of the other accessories work (ballast, stereo, etc.) I checked the 50 amp breaker and the EFI fuses and they seem to be fine. I was wondering if anyone has any insight into this issue. Thanks!