Bypass the need to use the console with this userscript.
Microsoft ISO Downloader: Download any Windows 7 / 8 or 10 ISO you need OEM or RETAILdirectly from Microsoft: https://www.microsoft.com/en-us/software-download/techbench
This way you don't have to worry about the ISO being "clean" untouched. :)
N.B.: I'm not the author of the script, I just put it here for the convenience.Source: https://www.reddit.com/r/sysadmin/comments/4639ly/downloadofficialisosofwindows7windows_81/