There was quite a buzz on internet after Microsoft announced new Windows 11 and apparently lots of PCs will be unable to upgrade due to “incompatible hardware” or not meeting the Windows 11 requirements. This will probably change due to backlash but one of those requirements is Trusted Platform Module (TPM) 2.0, (or some say 1.2).
To check what version of TPM you have simply click on the windows search icon (or press Win-R to open run console) and type tpm.msc and press enter.
New windows will open, called Trusted Platform (TPM) Module Management. Check if TPM is ready for use and what version of TPM do you have. If you have 2.0 then this requirement is met.
Microsoft had an PC Health Check app to tell you if your PC meets requirements but they puilled it to update it.