Macbook pro 13" wont detect my 40" Insignia tv

I am having trouble hooking up my computer to my tv. I have a mini displayport cable and an hdmi and i cannot connect my 40" Insignia Plasma tv 1280x 720 and the tv wont detect any signal from my computer any possible solutions?

Is this a MasterCard credit or debit card issued by a bank, with a verifiable billing/statement address or is it a prepaid MasterCard debit card that you bought in a local store? Apple does not accept the second type of card.

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    message edited by;  cs

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