Windows 10 Installation Media 'link' -

Your Windows 10 Product Key (though you can often skip this during installation if your PC was previously activated). How to Create Windows 10 Installation Media

"Not enough space": Ensure your USB drive is actually 8GB or larger. Some "8GB" drives have slightly less usable space and may fail. Conclusion windows 10 installation media

Boot from USB: Restart the PC. As it starts, you must press a specific key (usually F2, F12, Del, or Esc) to enter the Boot Menu or BIOS. Change the boot order so the USB drive is the first priority. Your Windows 10 Product Key (though you can