media center problem, please help

I went to media center to record some tv shows. after i pick my channel it plays for like 5 secs and tells me there is no tv signal, is this happening to anyone else? im not sure if this is just windows 7 or not, this is my first time trying this. any help would be greatly appreciated.

yes this happens to me as well. Remember this a Beta.

yea, i know it is, i just didnt know if it was my connection or what.

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