site:tomshardware com invalid format on hdtv connection to pc

I have cable connection from toshiba laptop to LG HDTV resulting in message INVALID FORMAT.

What di I do?
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More about site tomshardware invalid format hdtv connection
  1. "Invalid Format" is generally the message you get when trying to display a desktop with an incorrect resolution and/or frequency. Try different resolution settings.

    -Wolf sends
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