Are you running Snow Lep or Lion?
Also make sure the display port is in the right way.
Originally Posted by eaglecreek
Hi everyone, I'm totally new to this forum but after reading through the threads I think I'm in the right place. I'm trying to get our imac that runs Propresenter 4 to go from mini displayport - hdmi out to show up on the atem tv studio. When I plug the hdmi cable in the imac flashes blue but never shows an external display in the display preferences.
I've changed display screen sizes in a number of different ways but nothing has worked. Could it be the mini displayport to hdmi adapter that is a problem? Looking on renewed vision's website it seems like getting an SDI converter could be the way to go but I want to know if there's anything I'm missing before I go and spend a few hundred dollars.
The mini displayport to hdmi adapter is Belkin. Any help from you gurus would be awesome!!