Windows 10: csm enabled but still cant upgrade to 11

I am struggling with upgrading to windows 11 and it is stating that I need to enable secure boot, but it already is. I can't figure it out through the bios and since this is a custom-built pc I don't have a manufacture to turn to. I know that the motherboard I bought said windows 11 ready ASUS Prime B550-PLUS but it just wont let me says I don't meat min requirements because of secure boot. any help?

:)

 

Windows 11 not booting (storport.sys BSoD) when CSM enabled.

The card appears to be from 2012 so it may not be compatible with Windows 11.

The CSM is there to allow non-qualified devices, on the PCIe Bus, to operate. I don't believe Windows 11 allows enabling the CSM in its UEFI operations.

The technical support page for the device does give contact info for support, but I did not see a designation of Windows version compatibilities.

 

Windows 11 not booting (storport.sys BSoD) when CSM enabled.

These are my computer hardware
1. ASUS ProArt B550 Creator (BIOS 3301)

2. Ryzen 9 5950x

3. RTX 4090
4. LSI MegaRAID 9267-8i (RAID controller)
5. Windows 11 Pro is installed in SATA SSD (AHCI)

When installing windows, I had to disable CSM because enabling it would give IRQL NOT LESS OR EQUAL error with storport.sys. When Windows was fully installed, I restarted the computer and enabled CSM, as the RAID controller only works when CSM is enabled, but this makes Windows fail to boot with the same IRQL NOT LESS OR EQUAL error with storport.sys. I really need to get this to work because my RAID setup contains data that I need.

 

I have widnows 11 isntalled, what will happen if i disable csm to enable secure boot?

Hi Arav Bende,

I am Dave, I will help you with this.

1

Typically to be able to install or upgrade to Windows 11, BIOS would need to be in UEFI Mode with CSM disabled and Secure Boot and TPM enabled.

What method did you use to install Windows 11 on your PC that allowed you to do that without enabling Secure Boot?

2

If you disable CSM and enable Secure Boot there may be a problem booting Windows 11, sometimes that can be fixed by resetting the TPM keys in BIOS and then Windows will start.

Before you do try that option, please backup your personal files.

3

If you need to re-install Windows 11 from a bootable USB to enable Secure Boot, there will be no option to keep you personal files or apps, you would need to backup all your personal files before re-installing Windows 11.