Updating to Windows 11 issues

[Robin1456]

Hi. I have been trying to update to Windows 11 for a while now, without any success. When running the Pc Health Check App to see whether or not my pc can upgrade to Windows 11, the only thing left is that my pc must support Secure Boot. I have updated my BIOS, and enabled Secure Boot in the BIOS when starting, which apparently didn't make any effect as the secure boot line is still there in Health Check App. When running msinfo32, it says that secure boot isn't supported, which I find strange considering I found the BIOS update on a Windows 11 site on ASUS website. I have also tried converting primary drive containing the OS from MBR to GPT, without any success. The message 
I get when trying converting is that no OS partitions are found on the drive Windows is installed, so I haven't got the drive to convert to GPT either.

My Motherboard is ASUS ROG STRIX B-450F GAMING II

[RP22]

I don't see that mobo on the ASUS  "Ready for Windows 11" list:

https://www.asus.com/microsite/motherboard/asus-motherboards-win11-ready/

R

[Jiaszzz_ASUS]

Hello @Robin1456 

Thank you for reaching out to us.
According to the "Ready for Windows 11" under the AMD platform, the B450 chipset category includes the ROG STRIX B450-F GAMING II motherboard model.

As referenced in the ROG STRIX B450-F GAMING II user manual, you will need to install an additional TPM module to support system updates.
For information regarding the Windows 11 update, please refer to [Motherboard] Which ASUS model supports Windows 11 and how to set up TPM 2.0 in BIOS? if needed.

Thank you.