My ASUS ROG GL753VE has one M.2 slot currently populated with a Sandisk SATA SSD. I am trying to upgrade to Samsung 970 EVO Plus NVMe. Specs say the M.2 slot will support both SATA and PCIe. I can read/write to the new SSD while it is in an external USB enclosure. The [Macrium Reflect Free recommended by SAMSUNG] CLONE says it completed successfully, so I think the new SSD itself is OK. However, this straight-forward clone of the original SATA SSD to new PCIe/NVMe does not find boot device and goes directly to BIOS settings screen. Should the M.2 slot be Plug-N-Play and work 'automatically' for either SATA or PCIE NVMe SSDs or must the system [BIOS?] be reconfigured in some way? Or, does Macrium Reflect Free CLONE or the Macrium Rescue Flash Stick include BIOS setting updates?