I have a ROKU 2 that has worked fine for about 5 years, but all of a sudden I cannot establish a wifi connection. I have gone thru the set up procedure again and I get "ROKU" on my TV screen showing it is connected but I get nothing else on the screen when I push buttons on my remote (ie, no chance to choose a wireless). I have disconnected the ROKU 2 box and replaced remote batteries over and over with no success. My wifi works because it shows on my iPhone which I am holding right next to the ROKU 2 box.