We absolutely do not tolerate piracy on this forum. Any further discussion or hints or downloading pirated copies of Windows will result in closing or deletion of this thread.

But, few people know there is a legal way to download Windows isos-- get an MSDN subscription. Sure, it costs about $1200 for one, but you get developer copy access to just about every piece of software Microsoft produces. But, it's legal, and it answers your question about how to download Windows isos.