Press Alt + Tab to cycle through open windows and bring the missing screen into view
Press Windows + Shift + Arrow Left or Arrow Right to move the window between monitors
Right-click the taskbar and select Cascade windows
Right-click the taskbar and select Show windows stacked
Right-click the taskbar and select Show windows side by side
Press Windows + P and choose PC screen only, Duplicate, Extend, or Second screen only as needed
Open Display settings by right-clicking the desktop and selecting Display settings
In Display settings, click Identify to see which monitor is which
In Display settings, drag the monitor icons to match the physical layout
In Display settings, select the missing display and choose Extend desktop to this display if needed
In Display settings, click Detect if a monitor is not showing up
Use the monitor’s input/source button to select the correct input
Check the cable connections for HDMI, DisplayPort, DVI, or VGA
Restart the computer if the screen still does not appear
Update or reinstall the graphics driver if the display problem continues