Hi!
Could you help to modify bios to have NVME support?
Motherboard ECS G41T-M7 v1.0 with S771 XEON E5450
Modifyed BIOS with S771 support attached
SSD NVME Netac E930 PRO VID 126F PID 2263

Hello, im sorry but the conventional NVMe mod described here: [HowTo] Get full NVMe support for all Systems with an AMI UEFI BIOS
will not work as ur motherboard is too old and Legacy bios, not UEFI.

U can try this, at ur own risk: [Experimental] NVMe Option ROM

And without any bios mods:
[Guide] NVMe-boot for systems with legacy BIOS and UEFI board (DUET-REFIND)
[Guide] NVMe-boot without modding your UEFI/BIOS (Clover-EFI bootloader method)

Good luck.

Hi friend , Fernando replied to this request so far ...

[Request] Full NVMe Support for the ECS G41T-M7 Mainboard?

it is impossible to get full NVMe support for your old system with an Intel ICH7 Southbridge by a BIOS modification.
You will be able to get the OS installed onto your WD NVMe SSD, but the boot sector has to be outside of it.
Good luck!
Dieter (alias Fernando)

P.S.: Since your problem has nothing to do with the in-use NVMe driver, I have moved your request into the Sub-Forum named "NVMe Support for old Systems".