If that fails, and the card maker bails on support, call it defective and RMA it.
My system : Win 10 Pro 1809 ; video card : Zotac Geforce GTX 1080 ( 3 displayport / 1 hdmi / 1 DVI-d ).
My principal problem is that Windows won't detect my second monitor ( TV , not Smart TV, but 3-4 years old TV from TCL ) through HDMI-HDMI and also bought an adapter from HDMI to DVI-D to plug in the videocard DVI-D port.
I tried all the things I found on forums ( latest drivers installed, uninstall completely the Nvidia driver etc ) .
If I plug just the TV and restart my PC , it shows my BIOS, and in Safe mode it works too, but in the moment I connect my monitor ( through DisplayPort it shows No Signal on TV ). I can't type in safe mode to search for Device manager while TV is shows the image .
I don't know what to do anymore, please help me.