Run the Windows 7 Loader 1.6 By Hazar tool as an administrator. Right-click on the executable file and select "Run as administrator" to launch the tool.
Select the activation option that corresponds to your Windows 7 installation. The tool will detect your operating system version and architecture, and provide you with the relevant activation options. Run the Windows 7 Loader 1
If you were to proceed with a tool like this (again, not recommended), here's a general step-by-step guide: Run the Windows 7 Loader 1
You will see a window with tabs:
[Install] [Uninstall] [About] [Options]