One of the key system requirements for Windows 11 is that your computer must have TPM 2.0 or Trusted Platform Module 2.0. Microsoft requires this to ensure that Windows 11 stays secure and stable. If you are upgrading from Windows 10 to Windows 11, it is important to make sure that your PC has TPM 2.0
Right-click the Start Button.
Select Device Manager after right-clicking the Start button. This will open Windows 10's Device Manager.
Go down and double-click Security Devices or expand the arrow next to it.
If it says Trusted Platform Module 2.0, this means you have TPM 2.0 This is important if you want to upgrade to Windows 11.