Why do all games crash?

Question

Iron

At one "wonderful" moment on my machine under Windows 10, all games refused to work in normal mode (which had been running without problems for more than a year).
Which, as I understand it, fundamentally happens to all of them. After a slight subfreeze, they spontaneously fold-unfold. This may begin to happen almost immediately, or after some time; regularly, or randomly; lead to a "fatal" crash (about which below) after the first time, or after several turns-turns.
How sooner or later does this pandemonium end. Either after the first or after the nth minimization, the game does not unfold correctly and from now on, in the "maximized" state, I observe either the desktop with the cursor from the game, or a static "screenshot" of the last moment from the game before the minimization. At the same time, in both cases, the game still seems to work: sounds are heard, you can hear how the game responds to mouse movement / keystrokes. But instead of an image, either the desktop or a screenshot.
All games in that window (short or longer) between turn-turns and before the crash themselves work flawlessly on their own - there are no lags. Any programs from Skype to Matlab with calculations written in C ++, loaded calculations, never crash, only games (launching in windowed mode does not change things)
Because of what it can be? It seems to me that with such characteristic behavior, this cannot but be some kind of typical problem.

Answer 1

Minimizing/expanding looks suspicious, especially if the game in the background continues to work with sounds, etc. If there is a hardware failure, the game freezes/crashes.
I would think about recently installed programs, such as keyboard assistants, all sorts of annunciators, etc
.. met the situation that during the game the program gave out some kind of pop-up information message and tried to display it on top of all windows.
Try to close all the programs before the game, so that you only have a watch in the tray.
Perhaps I accidentally or intentionally turned on some combination of buttons or hotkeys were attached without a modifier.