I would consider you to go where ever you purchase your phone to get it check up!!!! (if u don't have insurance in your phone then thats a deal ain't it?)might b that the battery died out?>I was watching a video on youtube the other day and some 1 said that if you ask for spare battery on sprint that they might give it to you
....another thing u can try is to remove the battery for a couple of minutes and then try again or try to connect your phone on to a computer to see if that charges the phone at all other than that i cant help you with much!! good luck...
OH and by the way i dont think that the energy rom might b an issue since i had it install on my phone....and i had no battery issues