> OPTION TWO <
If you don't have an OEM PC that came with Windows 8 preinstalled and you updated Windows 8 to Windows 8.1, then when you refresh
Windows, it will reinstall Windows 8.1, but only if you have Windows 8.1 USB/DVD installation media.
You must insert Windows 8.1 USB/DVD installation media. See this link: How to download Windows 8.1 installation media.
If you don't insert any installation media or if you insert Windows 8 USB/DVD installation media, then you receive the following error message: "Insert Media. Some files are missing. Your Windows installation or recovery media will provide these files.
" (see screenshot below).