My Windows 10 PC seems to be working OK but I notice that between the Windows 10 splash screen and the user sign on page there's a period of time when the screen simply goes black. The system does get to the sign on page but black screens freak me out a bit and I was wondering if anyone else was seeing this? If so, do you know the cause and how to fix it? Also when I log off I'm seeing the same thing. With Windows 10 when I shut down there's a brief period when the screen is simply black and I'm now having to rely on the sound of my machine turning off vs. the visual queues that I had under Windows 7. Again, anyone know what is causing this and how to fix it?