Issue with TV connection to PC

Hi,
when connect tv to PC with HDMI and start the computer, it is loading onto TV while monitor is not recognized at all. Checked display settings and there is no monitor recognized. Clicked detect and identify and still nothing. When Hdmi cable is taken off PC , monitor is working as normal. Does anyone know how to resolve the issue? Drivers updated to the latest version.
Operating system Windows 8.1
Video card: ATI HD-4200
Monitor: Acer 23"
TV: Samsung 40" Led with 2hdmi connections (btw tried both of them and same result).
Thanks!
 
You need to be sure the pc video is in DUPLICATION mode for the HDMI to become enabled
 
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