My rezound's screen doesn't work. I'm starting to think the previous owner tried to root and bricked the phone. My orange charge light comes on, but as soon as I press the power button it goes off and nothing happens. I've checked battery voltage and it's at 4.01v, so it appears it's fully charged. "IF" the phone was rooted and bricked, not knowing anything about how/when/why..... can I set it back to stock in any way, shape or form?