I recently acquired a Venue 8 5830 Pro (that is how the Dell site recognizes it.)  I had to do a factory reset since no knew the password.  It is now back to Windows 8.1 instead of Windows 10.

I know the Windows 10 "free" period is over but I have access to Windows 10 media.  But is there anything "special" about the version of Windows that is on this device?  Will a standard ISO work to install Windows 10 on this?

BTW: I did try to go to the Windows 10 download site (https://www.microsoft.com/en-us/software-download/windows10) but after downloading the tool, it said I didn't have enough room -- 5+GB and it needs 8GB.  So, I've cleaned the drive but the rest is all OS stuff.  WinSxS is takeing 7GB by itself.