I attach WinDBG log.
I was browsing for my VC redist catalog on VBox folder share, then got system freeze. Was going to check if I installed all VC++ packages (2005 - 2017).
It happened after succesful installing of all x86 VC++ redistributables (2005 - 2017) without rebooting the system.
Didn't capture screen this time.
2nd log part: Tried to rescue with kdb > g, gh, gn. Can't rescue the system, non-clickable window.