SInce you have the current software. Since it is ot booting, sound like the OS may have become corrupted. There is a whole section on how to recover a dead Blackerry. I just do not know the link off hand. I am sure someone here will post it.
If this does not work for you, then I would call VZW and have the device replaced.
If you can get the current device to boot, then you can also try to remove the desktop manager and re-install it.