O_o
This is the first I've ever heard of that happening.
Fortunately (or unfortunately?) OneNote is not a built-in Windows 10 application, it's part of the Microsoft Office package. You could remove it, but that doesn't tell us why the application is being launched over and over.
Could you download and install MIDI-OX to see if maybe there's some weird MIDI signal being sent to the computer which is somehow being interpreted to launch a program?