Dear @Dagal,
The NVMe.rar (9.9 KB) module you provided in post 249 appears to be correctly configured, but there’s a problem with the final byte.
I should point out that it should be “08” not “88”.
If this module is added to the BIOS in this state, the motherboard will not recognize the NVMe M.2 SSD drive after each reboot, and the drive will only be visible after a full shutdown.
In short, the drive will disappear from the BIOS when the user reboots the motherboard.
I previously explained this in detail HERE.