I'm trying to do GTX 1080 sli, and so I have two cards, and 2 bridges (more on that) but I cant get the sli option to show up (see pictures). I have confirmed both cards working individually in any slot, but interestingly enough, when together, only the bottom card is active regardless if the bridge is on the cards or not (display will not show when plugged into the top card, only the bottom, does not matter the order of the card). I thought maybe this MSI bridge is broke, so I bought another sli ribbon. Still no option for sli. I've confirmed the bios sees them both. I've reinstalled drivers, Googled the crap out of this issue but I'm not having luck. Does anyone have ideas?
Specs:
2x EVGA GTX 1080 ftw
Mobo: Asrock Z170
Ram: 32 gig ddr4
Sli bridge: MSI hard bridge and x1 asrock ribbon that came with the mobo.
Windows 10 Home edition.