Restart the device
Check the monitor cable connection
Replace the HDMI, DisplayPort, VGA, or USB-C cable
Try a different display port
Try a different monitor
Update the graphics driver
Roll back the graphics driver
Reinstall the graphics driver
Update the operating system
Change the screen refresh rate
Set the recommended screen resolution
Disable adaptive brightness
Disable variable refresh rate
Disable hardware acceleration in apps
Close recently installed apps
Uninstall problematic apps
Boot into Safe Mode
Check for overheating
Clean the device vents
Disconnect external devices
Check the power cable
Try a different power outlet
Disable overclocking
Reset display settings
Run a malware scan
Update BIOS or firmware
Reset the monitor settings
Check for loose internal display connections
Replace the laptop screen cable
Replace the display panel
Contact a technician