All we need to do is to provide the version details inside this file so that windows setup is not needed to ask for a product key to install the appropriate version relevant to that product key. if you are going to install windows 8.1 using a usb drive, transfer the installation files to the usb and then proceed to step 2.. When the download is completed, you’ll be having a bootable usb to do a fresh installation of the windows 8.1 legally without product key on your system. if you’ve chosen the iso image option. Full article: http://buff.ly/1elhzch microsoft now lets users to download windows 8.1 installation file to install, reinstall, or upgrade from windows 7. so.
Until now, getting windows 8 / 8.1 onto a computer hasn’t been the easiest thing in the world, if only because you couldn’t use a windows 8 product key to install windows 8.1 afresh or even choose the architecture to be installed.. I need to do a clean install of windows 8.1 but i don't have a product key for windows 8. just a product key for windows 7 home premium for which i don't have any install media. my upgrade path just a product key for windows 7 home premium for which i don't have any install media..