this has happen to me too. I am now a mac person so bear with me. You iunes device is turned off on your pc. Go to run type in services. In services you will find Itunes click it to turn it on . that should do it.
I have a macbook pro 17inch early 2011, I was using it with my tv and working fine out of the mini port. My battery ran low and it shut off. Now the mini port will not recognize the tv. I have resett the pram but no luck. Shut off computer no luck and then the tv. anyone with any suggestions.
thanks a newbie to the insider.