Once you have the file, you can't just copy it to a thumb drive; you need to "burn" it to make it bootable.
: If the official link is unavailable, tech communities often point to the Internet Archive for verified "untouched" ISOs, which preserve the original installer without third-party modifications. 2. Create Bootable Media telechargement-iso-windows-8-1-entrez-dans-le-pc
With your bootable USB ready, restart your computer and enter the (usually by tapping F12, F11, or Esc during startup). Select your USB drive to launch the Windows 8.1 setup. Once you have the file, you can't just