VanguardLH wrote:
....
If you go into the BIOS/UEFI settings, is there one for "primary display
adapter"?

https://ibb.co/album/NdbMCD Samsung HDTV with HDMI connected and ASUS
monitor with VGA (without HDMI cable). For video options somewhere else
I saw showed auto, onboard, and PCIe card. It didn't let me pick what
video output port to use by default. That's all I could find.
https://www.asrock.com/mb/Intel/H510M-HDVM.2/index.asp if you want to
view its details.


Have you looked at nVidia Control Panel's "Set up multiple displays" to
see what they let you configure there?

http://i10.photobucket.com/albums/a1...ps0923cca5.jpg

Yes. It's like W10's display options. Both show VGA connected monitor is
as display #2 while HDMI connected HDTV is #1. I want them reversed as
in VGA monitor as #1 while HDMI HDTV as #2.
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