Hello,I have a Samsung 850 sata SSD - it boots perfectly with it in one of the first or last SATA ports on the motherboard. When I boot with an nvme Samsung 860 installed - it sees the drive however it no longer sees the sata drive which has the OS. I need for it to boot off the sata drive. If I go into the bios - peripherals - it does not have the Samsung 850 Sata SSD listed. If I go to boot options it does not have the SATA drive listed. I turn off the PC and remove just the nvme drive - nothing else the system boots no problem. I cannot add the nvme drive after the system boots off sata. I've also tried disabling the nvme boot options and it still won't see the sata drive. I have a 750 watt power enermax supply so the system has plenty of power.