I don't have that motherboard but it sounds like your primary graphics adapter is set to internal GPU in the BIOS. Change it to PCI-E if you want to have a monitor connected to your 1070.
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Eule, thanks for the help. I checked the BIOS - "Internal Graphics" is set to [AUTO] - I would assume this would be ok, or should I switch to [Disable]? BIOS has a lot of options for PICE slots, I am hesitant to change anything without any suggestions at first. Maybe after a couple beers tonight I'll feel different

MSI Afterburner doesn't reflect a 1070 - just says Internal Graphics. Same with Device Manager.
My 1070's led's are lit, and fans running.
Pic of BIOS Internal Graphics
https://i.imgur.com/dI3ATFJ.jpghttps://i.imgur.com/dI3ATFJ.jpgPic of some PCIE BIOS Options
https://i.imgur.com/n0ZJtky.jpghttps://i.imgur.com/n0ZJtky.jpghttps://i.imgur.com/IHiCsHb.jpghttps://i.imgur.com/IHiCsHb.jpg