[SOLVED] How can i install windows 10 for free?

It's free to install just download from Microsoft... You'll have some minor limits on functionality and a watermark occasionally but it'll run forever like that. Any other answer would be illegal, it getting a code cheap off the internet which will likely become invalidated at some point later
 


But you will spend $x hundred on your hardware, right? 😀

You can install Win 10 and leave it Unactivated. $0.
When it asks for the license key, at the bottom of that screen. select "I don't have a license key"
Proceed on.

It runs just fine, with a few small restrictions.
No customization of the Desktop or Taskbar, and a sometimes appearing watermark at the bottom right of the screen.
Other than that, it runs just like normal.