I am running Windows 8 and I have a VGA connecting cable from my PC to my monitor that works fine. I am trying to connect a VGA male/female extension cable from my existing cable and then into the VGA socket on the PC. When I do this, all I get is a 'mode not supported' message on the monitor screen. I have connected the same two cables from a laptop running Windows / to a different monitor and everything works as it should. What is going wrong?
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