Hello!
I had this issue after the latest windows update (OS version: 17134.286) it was that the drivers for my M-Play wasnt installed anymore.
So if you experience that the M-Play isnt responding to the computer (Not connecting) then you might have experienced the same problem as i do.
So what did i do to solve this?
Well i basically went to “Apps and Functions” in settings and looked for “Obsidian Control Systems Driver package”, after i found it i uninstalled it and reinstalled ONYX.
This solved my problem and it might be something that solves yours to.
Im unaware if this only happens to the M-Play or if it only was my computer that was affected.
Greetings from Sweden! 
//Martin Hedström