LG L33L -- totally dead won't boot. Initially the problem started where got message, "invalid battery", and immediate phone shutdown, every attempt. Played with the power button, holding down, etc.. finally got the phone to stay on long enough to download files to laptop. Let the battery run low, to zero, planing on, plugging in to charger to fully charge. Now won't even recognize charger.. plugging over night , still nothing. Bought new battery, installed, still dead, nothing. Is it a brick now? How do I get it back up?