My rooted Droid X suddenly blacked out on me. I'm stuck in bootloader. I can get to a menu but nothing works, even a full wipe and factory reset. Everything takes me back to the bootloader screen or the triangle/exclamation. I can't SBF because my computer doesn't see the sd card when I plug it in. This just happened as I was reading email. Does this mean my phone is dead? What can cause that?