My Xbox One will not play Live TV. Instead, a black screen is present.

I just received my Xbox One yesterday. I went through all of the steps to setting up my DVR (Scientific Atlanta) and my TV (Dynex) to my Xbox. I have a HDMI cord going from both my TV and my DVR to the Xbox. Sometimes it will tell me that I have lost connection,
and when I set up my TV and DVR again, it lets me into the TV App only to see a black screen when I select my channel. My DVR is a Scientific Atlanta EXPLORER 8300HD, and my TV is a Dynex DX-32L221A12. Any help is much appreciated!

:)

 

Xbox won't startup

Yesterday i played COD Ghosts on xbox live normal.

couple hours laters after i turned off my xbox, it will not startup again.

I only get a black screen on my tv, both of my controllers will not connect with the xbox one

I have tried to reset my console, and to plug out the cable's and few seconds later back in.

Still black screen on my tv and can not play on my xbox one.

Who can help me??

Greetings

 

Xbox won't start up

Yesterday i played COD Ghosts on xbox live normally. A couple hours laters after i turned off my xbox, it won't startup again. I only get a black screen on my tv and both of my controllers will not connect with the xbox one I have tried to reset my console,
and to plug out the cable's and few seconds later back in. Still black screen on my tv and can not play on my xbox one. Who can help me?? Greetings