windowscentral[.]com/how-fix-black-screen-problems-windows-10
OK, I admit that I've no idea how common this issue is -- I've never experienced it -- but the article nonetheless has a few keyboard shortcuts & other tricks that I never knew about that might come in handy. One example: "you can use the Windows key + Ctrl + Shift + B keyboard shortcut, which restarts the video driver and refreshes the connection with the monitor."