I need help. Today my Evo's screen crapped out. It literally faded to black in the middle of me answering an alarm. The backlight is on but the screen is completely black. I was going to take it to a repair center today then i remembered that the phone is rooted. I know they'll put me down for a replacement phone, but when it comes time to send it back, how can I get it back to stock so they don't see that I've voided my warranty?