Up to earlier today, my phone worked fine. I was updating some android market apps, when it just froze. And then all of sudden the screen was black with that "phone icon" with triangle and red exclamation mark in it. then I tried to restart it ... first the icon of phone with the "green circle and arrow through the middle" ... I think it's the update icon, showed ... and then again the icon with red triangle and exclamation mark. it stayed so for like 10 seconds. and then there were some ... sounds, noises and the phone shut off completely. I was able to restart it again, same thing ... and now I can't start it at all, though it appears to be charging, when I attach it to USB. (the red light in right corner of phone ...) what happened? what exactly should I do? I really don't wanna do the factory reset, unless absolutely necessary.