Backshlash reboots system!

This issue has been dogging me for quite a while no.
I’m running a small quantum mini computer with windows 10 and Kodi v16.1 “Jarvis”.
Everything was working great and then one day I hit the \ key as usual to access the computer and out of the blue the computer rebooted.
I lived with the issue as I planed on upgrading to Kodi v17.0 “Krypton” as soon as it became a little more stable.
Today I installed Kodi v17.0 “Krypton” (nice interface) and began setting it up. The \ key worked as it should and the screen would change the resolution on each \ key stroke.
I loaded up the Favorites section and now the \ key again reboots the system.
What the …..!
Is there a coloration with favorites and the \ key?
Anybody know how to fix this?