...the second NVMe is for games. I tried to add in a third SSD connected to a mobo SATA connector, same not present in BIOS. The disk manager shows the NVMe drives AOK but no third installed SSD shown. I scanned for new hardware, still nothing. This build is completely new and clean from the start. I installed Win10 from an MS usb flash drive. No issues. Installed all my programs, no issues. It is running fine on the two NVMe drives and I didn't find this problem until a few days ago. Of course the return policy at Amazon ran out a day before I found this problem because everything was running great.
I contacted ASUS support and what they suggest is the following:
1. Select Boot -> CSM
2. Change Launch CSM to Disable
3. Go to Secure Boot
4. Set OS type to Other OS
5. Under Key Management,
6. Clear Key Boot key
7. Press F10 to save
8. Install Windows 8, Windows 8.1 or Windows 10
Before I do this, my question here on the forum is, has anyone ever heard of this remedy being used before? Could deleting these Boot keys be the answer to getting BIOS to recognize the SSD's and see them as Present? I am told reinstalling Win10 will delete everything from the main drive and I will have to trust a clone to have no hitches.