@MichaelAngelo: Welcome to the Win-RAID Forum!
According to what I have seen you have inserted the NVMe module into the correct "DXE Volume" of the BIOS.
What I cannot evaluate is the following:
a) Has any Pad-file been touched by your BIOS modding? I would need the original BIOS for a comparison.
b) Was the flashing procedure successful? Question: Does the "BOOT" section of the BIOS show a new device named "PATA" or "PATA_SS" while having CSM enabled?
Regards
Dieter (alias Fernando)