Computer video on tv hdmi troubleshooting

I am using Windows 7 on a home built computer with an ATI graphics card. I have my computer connected to my HD TV with a 50 foot HDMI cable. My audio is fine, but my video is watchable, but poor quality. I get little blue speckles that come and go, especially in dark areas of the picture. Sometimes there are very few blue specks, but sometimes it is pretty bad.
I suspect the poor quality picture is because of the long HDMI cable, but I'm not sure. I don't want to invest in a HDMI amplifier if I don't have to.
Any suggestions for me to improve my picture?

4 answers Last reply Best Answer
More about computer video hdmi troubleshooting
  1. Best answer
    Supposedly simple test.

    Move the PC closer to the HDTV and use a shorter HDMI cable. Do you still have the same "specks"?

    -Wolf sends
  2. Good idea, I can't move my computer. I will try moving my TV, but that is easier said than done. It is a very large TV.
  3. Moved my TV closer to my HDTV and used a 6 foot cable. Perfect picture. Will an extender help improve my picture?
  4. Best answer selected by ticktock01.
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