issue with my xv6900

[gremstein]

hi, im sorry if this has been covered before, i did a search and didnt find anything on it.
my phone recently stopped working, whenever i power it on, it shows the verizon screen, sits there for a minute, then says "no radio", and just sits on that screen. i cant even power it off unless i take the battery out.
I have tried hard resets, taking the battery out, and even doing the reformat, but it still wont work. does anyone have any thoughts?