: If your mouse or keyboard stops responding while the display is static.
This shortcut is a "first aid" measure for software-related graphics glitches. It is most effective in these scenarios: windows display driver reset shortcut
You don’t need to see the screen to use it—if the display is black but the PC is on, the keyboard shortcut still works. Listen for the beep. : If your mouse or keyboard stops responding
For power users, you can use the Command Prompt to reset the driver. This is useful if the screen is frozen but you can still move the mouse and have a command prompt open on a second monitor. Listen for the beep
It sends a specific instruction to the Graphics Device Interface (GDI). It forces the operating system to stop the graphics driver process ( igfx , nvlddmkm , or amdkmdag ) and immediately restart it. It does not close your running applications or games; it simply refreshes the video output.