Ok, just let me join this black screen club.
I bought my FTW 1080 about one month ago and noticed the black screen issue from 3 weeks ago. I spent tons of time to figure out the cause and try to fix it.
I wish I had read this post from the beginning so that I won't waste my time.
For me, the only game which causes the black screen issue is DCS A-10C which is a flight simulator. I can reproduce this issue pretty constantly (85%): just fly low altitude near surface and do some gun run to shoot buildings.
Other games play just fine, I can play GTA5/Crysis3/Battlefield4 for hours, no issue, even with overclocked GPU core to max boost 2113.5.
So if it is a hardware issue, I think EVGA is better to make a recall.