[VICTORIA]

I hope i am posting in the right place; I really don't know if this iis a windows problem or what. I have been streaming tv shows without incident and suddenly today wheni go to watch the show (streaming ) the TV says "invalid format" and i notice that the TV show is suddenly in an SD format - I don't know if that is a coincidence, but I was able to watch TV last week with no issues and none of the shows were SD. I feel like the SD thing is the problem but i have no idea what to do. I am a newbie and know very little about this.
I hope someone can help me - dying to watch ep3 of Sons of Anarchy!!
Thanks very much.
V.