If so I have tried to collect notes about what is required and how to tell:
First, Windows has a list of which CPUs are "Approved for Windows 11". Intel has a list and AMD has a list. Unfortunately there is not a list by socket (e.g. AM4)
Second to find out what CPU and Motherboard you have type win-R then MSINFO32. It has a lot of information about the PC.
Third to determine if you have a TPM type win-R then TPM.MSC.
Note the TPM may need to be enabled in the BIOS. Search for (name of motherboard) and User Manual. The user guide will tell you how to enable a TPM (if present), enable UEFI instead of Legacy boot, the CPU and socket type, and memory type.
Fourth: Verify current version. From a Command prompt (CMD) type SLMGR /DLI . If need to upgrade CPU/Motherboard is best to have a retail version.
Finally Microsoft has an app called PC Health Check which can give you a complete view of the current PC.
Any others ?