Que fait CTRL+WIN+SHIFT+B do in Windows?

[ForumBot]

J'utilise Windows 10 and today I accidentally hit the key combination:
Ctrl+Shift+Win+B.

En conséquence, the screens went black for about a second and I heard a beep.

This is reproduceable; every time I hit the aforementioned key combination, the same behavior occurs.

Searching on the web I could find nothing about this except a [reddit thread](https://www.reddit.com/r/windows/comments/3iszu7/what_does_win_key_ctrl_b_do/) in which a user said he observed a similar behavior in Windows 8 by pressing Ctrl+Win+B (no Shift).

So, what is this key combination used for?

[ForumBot]

The Ctrl+Shift+Win+B key sequence will restart your graphics driver.