Hello!
I am having the same problem with my Windows 10 (64bit - anniversary edition) OS that another one of your users was having (apparently) just a few days ago. Just in the past couple of weeks, all of a sudden I have "NanoCore client is running" in the system tray. When I "end task" to the Microsoft .NET Services Installation Tool in task manager, the NanoCore client goes away for a few minutes and then re-installs itself. Can you please allow me to download the (apparently customized) FRST tool and instructions that you provided for your other user? Thank you so much in advance!