Sorry you are having a similar problem. I have sound, wi-fi, etc. Just not able to turn on blue tooth. It hangs in "turning on" grey mode for about a minute then nothing... Just been living without my stereo headphones. Not the worst problem, but would be nice to figure it out.
I was reading on another forum where some guys seemed to have the same problem as mine and they solved it by typing in codes and deleting lines etc. I had no clue where to begin or how to decipher what they were talking about. I rooted my phone through adb and have the eafile explorer, but still am lost....