I've recently been having a very odd, but at least consistent, type of crash. I'll be doing quite normal things on my computer, and then I will try to start a program, and the blue wheel will spin around, and it's clear that Windows recognized that I clicked on the program to start, but the window will never come up. Confused, I'll by default hit CTRL-ALT-DELETE in order to bring up the Task Manager and see whether the process is in there. The blue wheel will spin around...but the blue window where I can click on the Task Manager button never appears. Bemused, I'll click on "Process Hacker", a dedicated, third-party task manager that I've used for a long time. It behaves the same as all other programs and will not appear. Out of desperation, I'll click on the Cortana Search Bar and Windows Start button, but they no longer even animate when I mouse over them, much less activate when I click. (Please note that this is progressive, at first, Cortana and the Start button work fine, but after a couple moments, it stops). The rest of the computer continues to function normally, no errors or thrown or anything, I can still use Google Chrome etc. but after a minute or so, the entire screen will go black and I'll be left sitting at the black screen until I reset the computer.
Any suggestions would be very welcome. I recently enabled Internet Connection Sharing from my Wifi Adapter to my motherboard's Ethernet port in order to quickly stream Xbox to my computer, so I'm wondering whether that may be the issue. The Event Viewer does indeed start registering errors when this crash starts to occur, but I have yet to find the root error in the event viewer. Online posts that have similar issues seem to suggest that perhaps it's an issue with the graphics drivers, in particular, having more than one monitor, or video output plugged in, but I only have one, and my drivers are the latest stable version.
Geforce GTX 970
16 GB RAM @ 1866 Mhz