The shortcut to reset the graphics driver is: Windows + Ctrl + Shift + B. This is the built-in key combination that will immediately refresh the display driver without the need of re-booting your PC. You have to press these four keys simultaneously, and your television could flicker or blacken briefly, and a short beep would be heard. It will restart the graphics driver and can fix any momentary display glitches, such as freezing, flickering, or whatever other visual anomalies that may be present, but it does not have to reboot your applications that are in use.