The most basic fix is ensuring Rufus has the necessary elevated permissions to modify hardware.
Windows 7 sometimes remembers old drive letters that no longer exist, causing conflicts. rufus access to device denied windows 7
Download HP USB Disk Storage Format Tool (works flawlessly on Windows 7). The most basic fix is ensuring Rufus has
Even if you are an administrator, Windows 7 sometimes restricts raw write access. rufus access to device denied windows 7