Question When i attempt to disable CMS mode in bios my PC wont boot

[macartans]

I was trying to enable secure boot on my pc as it is the last step i need to take to prepare for windows 11 but for some reason when i switch off CSM mode and try and boot my bios just opens back up and doesnt list any boot sources. Does anyone know why or how i may go about solving this?

 

[Lutfij]

You mean CSM? If so, then you will need to make sure that the primary boot device is Windows Boot Manager. Outside of that, you should allow the OS to boot then reboot to BIOS, then enable Secure Boot. What is the make and model of your motherboard? BIOS version for said motherboard?

 

[macartans]

You mean CSM? If so, then you will need to make sure that the primary boot device is Windows Boot Manager. Outside of that, you should allow the OS to boot then reboot to BIOS, then enable Secure Boot. What is the make and model of your motherboard? BIOS version for said motherboard?

yes i did mean CSM. I am not entirely sure how to make windows boot manager my primary boot device

this is my motherboard model
Asus STRIX B350-F GAMING ATX AM4 Motherboartd with bios version 5603 x64