Making PC Windows 11 ready. Secure boot disabled message

What do I need to do to get PC Healthy Check, to say my PC supports W11?

You can run MBR2GPT and convert your installation to be compatible with UEFI only mode. You should as with any changes to your partitions make a full backup of your system. Full instructions can be found here

Or well see that Secure Boot is enabled.

Secure Boot is a UEFI mode-only feature. You will be unable to upgrade to Windows 11 without performing a clean install unless you use MBR2GPT and enable Secure Boot.

The alternative is when Windows 11 is released, you can format everything on the disk while in UEFI mode and install Windows 11 provided your system meets all other requirements.

In clear and precise language, Microsoft has indicated that the requirements for Windows 11 Insider Preview builds are not identical to that of the RTM Windows 11 build. Systems that install Windows 11 Insider Preview builds that ultimately do not meet the final Windows 11 RTM minimum requirements will be forced to downgrade to Windows 10.