Just got this phone two weeks ago and it won't turn on. It turned itself off and wouldn't turn back on. I googled it and found a million people saying the same thing but most of them used the forced reboot (power + volume down) to regain access to the phone. When I do this it will shut down and when I try to start it it'll simply stay at the "M" logo but never actually start the operating system. I'm mad as hell! Any advice?