Windows 11 requires a TPM 2.0 security processor to install or upgrade to Windows 11. A TPM is a dedicated processor used to perform hardware-based cryptographic operations to secure encryption keys and defend against malicious tampering of your hardware and the boot process. Microsoft has released a list of processors that are compatible with Windows 11, including Intel and Qualcomm processors. The PC Health Check tool can still report that “This PC can’t run Windows 11
Source: security