This is a variation of problems I've seen in the community.
My desktop goes into sleep mode (default setting). After emerging from sleep mode, it will sometimes, randomly freeze up. I will get the white / black screen of death.
I have reviewed the other threads and made sure my graphic driver is updated to the latest. Using a dual monitor set up but that should not have an impact.
When I called MSFT, they took me through the basic troubleshooting which did not uncover anything else (i.e., power troubleshooting). Since basic support could not figure this out, they pointed me to the community with an answer that is not the exact issue.
No rhyme or reason for blanking out although I wonder if it has anything to do with playing video streams after coming out of sleep mode.