Hi, Have a bit of an odd issue with NVMe and SLI. Hardware is: Asus X99 strix Intel i7 5930K Samsung 950 Pro nvme M2 ssd 3x Gtx970 Asus strix oc SLI After a long time having this running on air on a single gpu and a build project going astray I've finally put it in the case under water, I have had this setup running on triple sli before to test although it was a long time ago. Currently have the issue that it will boot fine on 1X GPU and 2x SLI but when all 3 GPU are used the ssd drops out of the bios and is no longer recognised. I'm sure it must be a setting off somewhere as it's worked previously. All GPU are in their correct slot as per the manual, and can only run on 8x/16x/8x so can't use all 40 pci lanes. From what I understand 8 are controlled by the PCH chipset so on board pci has no access to them so it's odd that the extra GPU is interfering. I can wiggle out 2 cards easy enough but obviously swapping them around is more difficult due to the water cooling. I have tried: Disabling CSM Forcing x8 on the card that is usually x16 Updating driver Motherboard is on latest bios anyway Reseating gpu Wiggling the bottom 2 cards out of pci slot, boots fine, push them back in, same issue Anyone have any suggestions?