Dr. Bott Mini DisplayPort to HDMI cable doesn't work.

I'm trying to connect my MacBook (mid 2010) with my tv and I can't get it working properly. I have the HDMI cable, and the mini display port to the HDMI cable. When I connect the computer to the tv, the computer screen turns light blue like it is about to synchronize, but the tv screen remains black. After a moment, 2 boxes appear on my tv screen. One says "HDMI1: and  the other "no signal detected".
I've tried with "detect displays", I've tried connecting to all the HDMI ports I have on my TV, I've tried basically everything but it still doesn't work.
This is the adapter - http://www.drbott.net/product/7395-MDPA/
My TV is a fairly new Samsung, and everything else is working fine, I don't know why this won't function. It's frustrating me.
Any help on this matter would be greatly appreciated. Thanks.

When I have this problem, it is because my Macbook Pro is using "Integrated" graphics vs the "Descrete" graphics.  I control this via the gfxCardStatus menubar utility.
You could also try reseting the smc controller
<http://support.apple.com/kb/HT3964?viewlocale=en_US&locale=en_US>
and/or resetting the PRAM
<http://support.apple.com/kb/ph11243>
That exhausts my ideas.

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