Ok so i went to settings and there were only 3 cards wroking in sli. I disabled sli and retried but when i click maximize 3d performance in the control panel it only makes 3 work in sli. How do i force my pc to make all 4 cards run together?
Have you tested each card to make sure they're all good and have you checked each PCIe slot to make sure they're all good? Try pulling all but one card, test it, then replace it with another, test it, and do that with each card. Then, try each other PCIe slot with only one card in. Or just try each card in a different slot to get it done faster.