For over 2 months I have had no problem with Chromecast, either in the bedroom or living room. Yesterday, while watching a movie from You Tube the picture froze and would not restart. Chromecast in living room quit entirely. Got up this morning and same thing. Worked for about 20 minutes then picture froze. Showed it was connected but would not work. Chromecast in the bedroom is still working. What do I do?