A "tiny" operating system that is 64-bit, stable, secure, and legal simply does not exist on public torrent sites. Your options are clear:
While Microsoft does not officially offer a "tiny" version of Windows 7, there are a few approaches users can take to achieve a more compact installation: Tiny Windows 7 X64 Iso Download
: Many builds include universal drivers to ensure the system works immediately upon installation. A "tiny" operating system that is 64-bit, stable,
This approach gives you a 10-12 GB install, which is not "tiny" but is stable, updatable, and clean. Tiny Windows 7 X64 Iso Download