Sapphire 6990 mini display port scaling problem

Hi, please don't get mad if this isn't the place to be asking a question in regards to a problem:) Just got a sapphire 6990 and hooked it up to my 50' panasonic 3DTV, I found out how to get the desktop to go full screen (no black borders around the whole tv) via the catalyst control center (my digital flatpanels/scaling options/underscan+overscan) but when I installed crysis and launched it it had black borders around all 4 sides of the tv. My hookup in the back is a dongle coming from mini display port to HDMI female (which comes with the card) and then I plug my HDMI into the dongle and the other end into the tv. Resolution does not make a difference with this problem, my desktop remains to scale but games do not? Does anyone have a fix for this? I don't want to go back to DVI to HMI as this does not carry sound to my tv. I have Windows 7 as well if that helps. Pretty sure the mini display to HDMI is the culprit but if anyone else has remedied this problem can you please help,thanks:(
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More about sapphire 6990 mini display port scaling problem
  1. i have same problem with hd6990 and LG w2486l monitor. Some games works fine some with black borders around. looks like i have not 24 inch monitor, but 21..
    help please.
  2. http://www.hack7mc.com/2010/05/ati-gpu-scaling-removing-the-black-bars.html

    that how i fixed my desktop and some games, but for example Driver San Francisco that didnt help.
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