How can I force to install Windows 11 on unsupported PC?

Installing Windows 11 on unsupported hardware can be challenging due to Microsoft's hardware requirements. Keep in mind that these methods may carry risks such as system instability, security vulnerabilities, or lack of official support, and they may violate Microsoft's terms of service.

1. Registry Hack:
Microsoft provides a way to bypass certain hardware checks via registry modifications, though this is somewhat known rather than obscure. It involves editing the registry key HKEY_LOCAL_MACHINE\SYSTEM\Setup\LabConfig and adding entries like BypassTPMCheck, BypassSecureBootCheck, and BypassRAMCheck set to 1.  

Note: This method is documented by Microsoft and considered a legitimate workaround, though it might not always work with all hardware configurations.

2. Using Custom Installers or Modified ISO Files:
Some users create or modify Windows 11 ISO files to include patches that bypass hardware checks. These are often shared in community forums or tech communities.  

3. Using Alternative Boot Methods or Unofficial Scripts:
Advanced users sometimes employ scripts or boot modifications (e.g., integrating patches into the installation media) to bypass hardware restrictions.  

4. Third-party Tools and Patches:
To install Windows 11 on unsupported hardware. Tools like "Universal MediaCreationTool" or community-developed scripts that modify the installation environment to bypass hardware checks. These are free but come with risks and are not officially supported.