https://www.windowscentral.com/microsoft-working-fix-windows-11-pc-health-check-app
I ran the upgraded PC Health Check app and it told me: "The processor isn’t supported for Windows 11”
except...the processor is listed by MS as a supported processor. I have some digging to do
The processor has to be 64-bit or SOC Requirements:
You can check some stuff yourself
Check your processor here: https://docs.microsoft.com/en-us/windows-hardware/design/minimum/windows-processor-requirements
scroll down. Find your Windows version then check to see if your processor is listed.
You can check if you have TPM by looking in "Device Manager"
Look for: “Security devices“.
Expand it and see if it has a “Trusted Platform Module” listed. If so, it should show the version.
You can check if BIOS has UEFI turned on by:
Click Windows and R keys. Run window pops up. Type: Type msinfo32 in Run window, and press enter;
Find "BIOS Mode" in System Summary, check if shows “UEFI” or “legacy”;