Can' connect toshiba to panasonic TV

Jun 27, 2018
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Hey
I have been browsing the forums for ages and tried everything but nothing seems to work to display my pc on TV.
Facts:
-Plugging toshiba through hdmi on a LG TV, instantly displays the image

-Plugging a compaq laptop (win.8) with hdmi to panasonic TV instantly displays the image

-Plugging toshiba to panasonic with hdmi: nothing happens (tried drivers, project image, change hdmi ports, change resolution,...)

All tests with the same hdmi cable

Help please im going mad