The images are not yet loaded, sadly.

I'm just wondering since 1) my settings in bios are ahci , 2) the driver I have auto installed is 
"Intel(R) C600+/C220+ series chipset SATA AHCI Controller"

So it's a slightly different setup in theory

Hi @Chino de Oro 

Well... let's start...

First, when my computer come from Dell Factory, its came with Intel RST Drivers (SATA and NVME) version 6.0.

Later, Dell Command updated the drivers to version 7.0 (this one https://dl.dell.com/FOLDER07153683M/1/Intel-Rapid-Storage-Technology-Enterprise-Driver_22P84_WIN_7.0.2.1015_A12.EXE)

This upgrade will upgrade this 2 drivers:

But, when I go to upgrade windows, the error occurs because of iastorE.sys which is precisely the Intel (R) C600+ /C220 device... 

So, before performing the upgrade I deleted the C600 device and clicked on the option to delete the driver. After this, i restarted the PC and Windows installed a default driver to that deleted. See this:

The C600 device was replaced by the Intel CHIPSET  SATA RAID Controller. Now Windows will upgrade ok, without BSD "iastorE.sys"

Now, about the WIN11 Clean Install...

Well, all times, when i installed the Windows 10, i loaded the 2 folders in RST files (because i never had problems or BSD in WIN10). This ones:

It is because the System cannot see nvmd disks at the beggining. But, now, i discovered only folder  IntelVROC is necessary to WIN11. If i load the drivers from that 2 folders... BSD again...

And i not posted all images because I thought it was unnecessary but come on:

After this i cliked in Refresh option and my NVME Disk is displayed to install Windows 11 (Win10 is same way)....

Then... after all this, i've installed with sucefull Win11. But how i said. After this i do not installed this Dell Driver Package (https://dl.dell.com/FOLDER07153683M/1/Intel-Rapid-Storage-Technology-Enterprise-Driver_22P84_WIN_7.0.2.1015_A12.EXE because, i already loaded in my installation the NVME Driver and the Windows automatically will instal the SATA RAID CONTROLLER. If you install itt this last driver will be replaced by that C600 drive and i will have BSD (iastorE.sys) again...

I apologize if I wasn't clear enough or for my English, but feel free to ask.

My bios is setted in RAID mode. (Always in RAID mode, i never changed that option)

Yes looks like different... Chino Bios is in AHCI mode and mine in RAID mode... but the ideia about C600 Was the same... The difference my machine had the INTEL C600+/C220+ series CHIPSET SATA RAID Controller (not AHCI like chino) but it was this C600 the problem...

Ok, at this point we need @Chino de Oro to pitch in.

I think he tried an upgrade to 11 on a cloned boot drive, and if he didn't have bsod issues, ahci and ahci c600 , it would lead to a scenario where " ahci + c600 sata ahci = safe upgrade " and "raid + c600 sata raid = doing @Flavius Aetius workaround"

@Chino de Oro 

Sorry, as I don't have WIN10 anymore, I used the image that chino posted to exemplify. Forget the AHCI written on the C600 device, the driver I had installed was C600+/C220+ RAID, (not AHCI) and what matters was that that was the problem. I found a old image (i sent to dell a long time ago because another problems).

This "red" driver is the problem:

All this makes me think about one thing. If your solution is valid because in your bios you have the setting to Raid.

Maybe it would upgrade without bsods if one had windows installed with ahci as bios setting (so without the need to remove the c600 driver).

Plus maybe I'm going to say something very, very wrong, but I think that if you are set as RAID in the bios, the correct driver that should have been installed should have been

"Intel(R) C600+/C220+ series chipset SATA RAID Controller"

@Chino de Oro 

You got me wrong... I didn't install the wrong driver. The intel manual included in the RST package installation says to load the drivers from the 2 folders:

"VROC_f6_iaStorE_win8_64"

"VROC_f6_iaVROC_win8_64"

The official Dell update package I mentioned also install drivers from these 2 folders to update the system, when I was using windows 10.

So when I was using Windows 10, I never had any problems with the INTEL C600+/C220+ series CHIPSET SATA RAID controller.

The problem occurs when I upgrade to Windows 11. Windows 11 does not recognize these drivers and the system cannot have any VERSION from 6 and above of the INTEL C600+/C220+ series SATA RAID CHIPSET controller or WIN11 will have BSD.

I formatted my system several times, always loading the drivers from these 2 folders, as intel written in the VROC manual to install Windows 10. I always identified my NVME disks. So I think we're having a misunderstanding in our views as what has always worked with Windows 10 doesn't work with Windows 11....

@Flavius Aetius , thank you for posting additional information.  First, I think you misunderstood me.  When I said picture is not visible to me yet, meaning the pictures are just triangles on my screen.  I am sure they will display properly later.  So, I have to discuss mostly based on guessing.

I think that @mazzinia understood my questions.  From your additional info, I think I got it clearer now.  The issue you had due to mismatch of hardware setup and drivers.  Previously settings would have all proper drivers installed and during your Windows upgrade, drivers are conflicting with hardware settings caused the BSOD.  You were unknowingly and unaware of the changes.

As for a clean install, you didn't use a correct driver to make the NVMe visible for installation and now you did, so it allows you to complete the installation.  This was a common issue with these Precisions using VMD controllers.

Both Windows 10 and 11 are using the same storage drivers and they are depending on how your storages are setup.  I just want to point out the driver you posted "Intel Chipset SATA RAID CONTROLLER", is not the driver for your NVMe drive as you thinked.

However, discussion is good and hope that it may help other users as well.

Same here, English is not my native language, however, I am comfortable with comprehension in communication.  Again, I didn't mean to offend you, just simply asking for some clarification for better understanding, and I don't want to make it becoming a debate.  I also saw that you have changed the deleted (issue) driver from the original solution, that makes some query became moot points.

To me, a confusion over the hardware configuration or drivers setup would lead to system breakdown or sluggish performance.  Therefore, on one hand, I am glad that you had found a solution that worked for you, and allowing you to run Win 11 on the NVMe SSD drive.  On the other hand,  I want to share some knowledge I learned about these Precision systems, just hoping that you will receive them in a constructive way.

In my understanding, the Precision 5820/7820/7920 are factory configured with two storage controllers (excluding the optional):

• The Intel RSTe, controller, which is integrated into the chipset (C620 series) and (C422).  It connects and controls all the SATA drives and can be configured to support RAID, AHCI, or ATA mode.  If you install this storage driver using Intel Chipset Device Software and Intel Rapid Storage Technology Enterprise Driver, you will get Intel(R) C600+/C220+ series chipset SATA RAID (AHCI) Controller.  If you did not use Dell's drivers, Windows will install an Intel Chipset SATA RAID (AHCI) Controller driver, it's a generic Intel's driver but it will work. 
• The Intel VMD controller (or VROC), it connects to all the (NVMe) drives that directly connected to the CPU.  There are 3 VMD controllers (6 controllers on 7920), the first one connecting to PCIe slot 1, PCIe0, PCIe1 (flex bay), the second one connecting to PCIe slot 2, and the third one connecting to PCIe slot 4.  Intel VROC is the software stack that manages drives attached to Intel VMD.  The VROC standard (with VROC key) allows drives connecting to Intel VMD to be configured into RAID and boot is supported on these arrays as well.  A driver is required to make the drive or volume become visible while installing Windows.  A generic driver such as Intel Rapid Storage Technology enterprise F6 Driver can be used.  Windows will install an Intel VMD driver, Intel Volume Management Device NVMe RAID Controller.

There are other optional storage controller such as MegaRAID, but it's irrelevant with your topic.  Looking back, you will see my first post suggesting a working Intel VMD driver for clean install and the second post was suggesting to correct the SATA storage controller driver by booting into Safe Mode. Depending on what type of drives are installing on which controller, system settings needed to be correctly set up and proper drivers being used.  You can bring the beast out of these Precisions.

@Chino de Oro 

About your considerations I understood. However, I can only install the Enterprise Driver from the folder ""VROC_f6_iaVROC_win8_64". As I said, and I don't know if I can write it in a way that I could be understood (I apologize if not).

If I have the Driver from the folder "VROC_f6_iaStorE_win8_64" which is precisely what renames the generic driver ""Intel Chipset SATA RAID Controller" to "INTEL C600+/C220+ series CHIPSET SATA RAID Controller" I cannot upgrade Windows, nor install and if Windows 11 is already installed and I install this driver (or even the Intel-Rapid-Storage-Technology-Enterprise-Driver_22P84_WIN_7.0.2.1015_A12 driver package) Windows 11 will crash. Such a situation does not occur on Windows 10. So I have a dilemma, or do I remain on Windows 11 using only the "Intel(R) Volume Management Device NVMe RAID Controller" Driver updated together with the "Intel Chipset SATA RAID Controller" driver (Generic) or I switch back to Windows 10 to use the two updated drivers "Intel(R) Volume Management Device NVMe RAID Controller" and "INTEL C600+/C220+ series CHIPSET SATA RAID Controller"...

At this moment i have 2x 2TB NVME Discs (1 is the Bootable device) ans 2x 2TB SSD Sata (only to storage).