Upgrading from Win 7 to to 10 - Not enough RAM

Greetings, attempting to upgrade to Win 10, however system says I do not have enough RAM to complete installation. (I have 16 GB installed). There seems to be many others with this issue, however being a Parallels user thought i'd post to see if anybody on this forum has a solution. One thread that I read suggested disabling the "Windows Management Instrument" in the Services utility. Is there a way to assign more RAM to the Windows side via Parallels, as the "configure option" in Parallels notes that the RAM allocation can only be changed when the virtual machine is shut down? Looking for any help to consider....Thanks and Happy Holidays!