My Surface Book is doing something odd. Every now and then, typically right after booting up, I see a window pop open and close immediately. It's just a blip. Kinda looks like a comand prompt window. Seems to be part of the boot up sequence. Anyone else have this happen? It made me think it was some type of spyware so I did a clean restore today. But it's still doing it. The flashing window doesn't bother me so much as the notion that it could be something nefarious. hehe Thoughts?