If you want to explore this topic further, let me know if you would like to look into:
Turning your computer into a zombie node to attack other networks. 3. Survey Scams and Adware Windows 7 Ultimate 64 Bit Highly Compressed -9.28 Mb
A: The Windows 7 PE (Preinstallation Environment) community builds have achieved ~180 MB (32-bit) and ~250 MB (64-bit), with no desktop, networking limited, and only command-line tools. If you want to explore this topic further,