Hey Charlie,
I got a dual DVI ATI video card...
maybe this will help...
I noticed my computer shuts off the DVI output to my 1070 when I don't use it...
(that could be your problem)
I have to go in my display settings and click it on each time...
Kinda sucked...so for now or until I need DVI switching...I bypassed the 1070 as far as the DVI is concerned...
Dan
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Outlaw 1070-Mirage M-290(main)+MCC(center)+Omnisat Micro(sides) nanosat(back)+ +PS12-90(sub)-Technics SL-5 turtable+Cambridge Audio 540P-HTPC - SamsungDTB-H260F HDTV tuner - Optoma HD 20 +100' Draper screen -lots of spaghetti and toys