WD_Black SN850 not detected by BIOS on bootup from power-off

I went to WD and registered my SN850, followed several links of Martin Winkler, downloaded several helpful links from WD and even downloaded EdgeRover which helped me connect to my NAS. My SN850 is showing up as D drive now in file explorer as pretty as a picture. All is well on my MSI Prestige Intel version.