Current PC has a Z170A-G43 PLUS board with an i7-6700K CPU. Not the newest I know but I was wondering if it was at all likely to support Windows 11. Looks like I've got SecureBoot disabled, on the MSI boards of this vintage you have to set another parameter "Windows 8.1/10 WHQL Support" (currently disabled) to get the SecureBoot options.

I know very little about SecureBoot so I'm wondering, if I enable that and then SecureBoot is there any chance I'll render the PC permanently unbootable? All my drives are already GPT and the machine runs Windows 10. If I enable this stuff and the system won't start then can I disable it again to get it working?