Windows 10: The Windows 10 App start screen only covers a portion of my monitor screen?

When I click on the taskbar icon to get to the Windows 10 start screen it only covers about 7/8 of the Windows "traditional" screen. Anyone have an idea how to stretch it??

:)

 

Windows 10 KB3213986 Update Cripples Multi-monitor Gaming

The recent Cumulative Update for Windows 10 (KB3213986) cripples multi-monitor gaming, looking at the way Microsoft worded its "known issues" text. After the update is applied, users with multi-monitor setups could experience screen stuttering or clipped screens when running 3D apps on machines with more than one monitor. The only workaround Microsoft suggests for now entails running your 3D apps in non-fullscreen modes, such as windowed-maximized (pseudo-fullscreen) or windowed modes. Microsoft also goes as far as to suggest that people with multi-monitors could try starting their 3D apps with just one monitor connected.

"Users may experience delayed or clipped screens while running 3D rendering apps (such as games) on systems with more than one monitor," the change-log for the KB3213986 update reads. "To work around this issue please consider the following options: 1. Running the application in Windows mode (not full screen), or 2. Starting the application with only one monitor connected," it adds. The update effectively cripples multi-monitor gaming, using technologies such as AMD Eyefinity or NVIDIA 3D Vision Surround.





Source: Microsoft

 

Black screen after 'Starting Windows' sequence

Sounds like the old... windows black screen of death.

Try this quoted from "VisiHow" article "Repair Windows 7 Black Screen of Death":

They, also, have some other options there, too.
Google search and you will find a lot of the "Windows Black Screen of Death with cursor" fixes.

 

Have Start screen open with “All Apps” list already opened?

Version 1607 Build 14393.105 does that, click Start and the full Apps list is scrollable.
Forgot to add this screenshot: