Microsoft officially ended all support for Windows 7 on January 14, 2020 . Activating the OS does not provide access to modern security patches, leaving the system highly vulnerable to exploits. Ethical and Legal Considerations How to activate windows 7 - Microsoft Q&A
It modifies the boot process to inject a SLIC (Software Licensing Description Table) into the system's memory before the OS loads. Windows 7 Loader eXtreme Edition v3.502
It offers several modes, such as "Trial Reset," "Loader," and "Certificate" injection. Microsoft officially ended all support for Windows 7