Windows Loader exploits this mechanism at boot time. Before Windows itself starts, the loader injects a into the system‘s memory. To Windows, this looks exactly like a valid OEM BIOS. The tool then installs the matching OEM certificate and product key for the chosen brand (e.g., Acer, Dell, etc.). When Windows checks its activation status, it finds everything in order and marks itself as activated.
For users who still need to activate a legacy Windows 7 or Server 2008 R2 machine, the installation process is relatively straightforward. However, the tool requires strict adherence to security protocols.