https://arstechnica.com/gadgets/2021/08/motherboard-makers-are-releasing-new-bios-updates-to-support-windows-11/ [arstechnica.com]
If you're using a pre-built desktop or laptop PC made within the last three or four years, Windows 11's sometimes-confusing, sometimes contentious [arstechnica.com] security-oriented new system requirements won't be a problem for you—all of the security features Microsoft is requiring for the new operating system should be turned on by default. It's a bigger problem for people who build their own computers (or who have had computers built for them), since features like the Trusted Platform Module (TPM) are often disabled by default.