4 gpu set up not working
Need a little help. I just got two more video cards and am trying to set up a 4 gpu system. Running 4 xfx 7970 two on 1x powered risers and 2 on x16 non powered risers. When I start my computer, my monitor won't even grab a signal to turn on. When I disconnect 3 gpus my monitor works fine. I installed the latest drivers as I thought it was the issue but it didn't fix it.
I am running 2 800w power supplies so I don't think that's the issue. I don't have the cards crossfired.
If anyone has ran into this problem, please help.