Hello good people,
I have had a working system with 2 NVME installed in DIMM.2 (see my post
https://rog.asus.com/forum/showthread.php?105089-Regular-NVMe-as-OS-and-RAID0-on-dimm-2-two-NVMe-dis.... Yesterday have shutdown the system, took out all memory modules and DIMM.2 raiser card, replaced the water cooling Enermax elc-lttr360-tbp LiqTech TR4 (blubbering noises) with AlphaCool Ice Bear 420, inserted back memory modules and DIMM.2 raiser card exactly in the same order, no any SW updates / driver updates, other changes what so ever. Now the one of 2 identical NVME EVO 970 2TB in the DIMM.2 M.2_2 slot (that is the left one closest to the RAM modules looking from the top) is not recognized any more, in BIOS it cannot be seen and in BIOS RAID2Xpert where previous I have configured the RAID0 there is a information that drive was physically removed??? The LED light is on on the M.2_2 slot of DIMM.2 raiser card so it is physically connected. Have tested both existing NVME Samsung EVO 970 2 TB, placing in M2_1, M2_2 slots, both NVME work in M2_1 slot. Have also put back the Enermax water cooling, no change, the DIMM.2 M2_2 slot is simply not recognizing NVME. Hope you have suggestion for other diagnostic steps....