Technology · Hardware

Fix a second monitor

Diagnose no signal, wrong resolution and display detection.

1. Select the correct input on the monitor and firmly reconnect the video cable at both ends.
2. Use the operating system’s Display settings and choose Detect or extend the desktop.
3. Test another cable, port or computer to isolate the failing component.
4. Update the graphics driver and choose the monitor’s recommended resolution and refresh rate.

Follow the official instructions for your device or service. Back up important data before changing settings or attempting repairs.