Hello, I was fortunate enough to be selected to receive the New Xbox One Experience Dashboard late last evening. I had no install issues, and enjoyed the experience for quite a few hours last night, this morning I turned my Xbox on and watched Hulu, went out to lunch and came back to find a "cant find signal" message on my TV.
Switched HDMI Cords (x2)
Switched HDMI Ports (x2) (They all work with my cable box / HDMI cables, but not Xbox One)
Hard Reset (x3)
Hold Eject + Power Button (x2) (Reset Video Settings)
Called Support (x2 Representatives)
Console out of warranty, support wasn't any help, I own a $500 brick now.