Steps to reproduce:
Warning: the glitch only appears unpredictably. I tried to reproduce it few times, but Minecraft didn't crash. This glitch is probably luck-based, but I've seen it occuring few times in the past.

1. Launch the game.
2. If the game didn't run in fullscreen mode, turn fullscreen on in options, then restart the game.
3. Do something in the game. For example, play a singleplayer world or join a server.
4. Press Windows key.
5. Select Minecraft from the taskbar.

If you are (un)lucky, a black screen appears. Windows has crashed. When you press numlock or capslock, diodes on keyboard don't update. Ctrl+Alt+Delete also doesn't work. Nothing happens even after few hours.

Crash reports

• crash-2018-03-30_21.13.37-client.txt - crash with f3+c without fullscreen

When the glitch happens to occur again, I'll send the crash report (if the game manages to make it) here.