Is it possible to disable the Intel VMD controller and use the standard memory controller

[Stefan_2000]

The system was upgraded with a second SSD from Crucial. The Crucial T705 SSD with 4 TB built into the motherboard in the PCIe 5.0 x4, NVMe 2.0 interface and only works when the write cache is disabled,
which means that the SSD's performance is very limited.
If the write cache is enabled, the system freezes and the active time of the drive goes to 100% when writing.

Crucial support says that the system has a problem with the Intel VMD driver. I am supposed to disable the Intel VMD controller and test the system with the standard memory controller and the standard Windows drivers. I couldn't find a way to disable the Intel VMD controller in the BIOS. What can I do to make the SSD work properly? The SSD works perfectly in another system.

My computer is an HP 45L Gaming Desktop GT22-0709ng.

Mainboard: HP, BlizzardOC
CPU: 12th Gen Intel(R) Core(TM) i7-12700K

Bios: F.56 Rev.A 16th of September 2025

Intel RST VMD Controller version: 467F / 20.2.6.1025
SSD: crucial T705, product number: CT4000T705SSD5

Thank you for your support!

[Bill_To]

Greetings @Stefan_2000 

Opinions or troubleshooting suggestions in this response are provided independently. I am not employed by: HP, Inc. or the HP Forum.

I can't see how you can eliminate Intel VMD in Windows if you cannot disable VMD in your PC's BIOS.

An unchangeable VMD BIOS option means you will have to inject Intel's RST drivers during Windows setup if you try a clean Window install using Microsoft Windows installation media.

Disabling VMD in the BIOS is one critical step required to go from IRST to a standard NVME controller.

Plus the sequence to convert from VMD to the standard NVME controller is specific.

Changing settings out of order could render Windows unbootable.

I don't think you can do the conversion if you can't change BIOS settings.

Regards