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How to Fix the 'No Signal' Message on Your LG Monitor: Causes

If your LG monitor displays a 'No Signal' message, it is usually due to incorrect input settings, a loose cable, or an unresponsive PC. First, use the monitor's buttons to ensure the correct input (such as HDMI or DisplayPort) is selected. Next, unplug the video cable connecting your monitor and PC, and then securely plug it back in. If the issue persists,….

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TroubleshootingMonitors

What to Check First

  1. Incorrect input settings.
  2. Loose, damaged, or incompatible cable.
  3. Depending on your model, the monitor's control button or joystick is located on the bottom, back, or front of the screen.
  4. Press the button or joystick on the monitor to open the main menu.
  5. Choose the exact port your PC is connected to, such as HDMI 1 or DisplayPort.
  6. Completely unplug the video cable from both the monitor and the PC.
  7. Check the cable connectors for any bent pins or debris.
  8. If the connectors look fine, plug the cable back in securely to both devices.
  9. We strongly recommend using the original cable included with your monitor.
  10. If the issue persists, try using a different compatible cable to see if the original cable is faulty.

Why This Can Happen

Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.

Safety and Model-Specific Guidance

Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.

Frequently Asked Questions

What should I check first for How to Fix the 'No Signal' Message on Your LG Monitor?

Incorrect input settings.

When should I stop troubleshooting and contact LG?

Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.

Does this guidance apply to every LG model?

Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.

Related LG Products

These model pages are linked because the stored category or exact model matches this Help Library topic.

Buying Guides for This Product Type

Household use caseMonitor Family & High-Use Household GuidePerformance & capacityMonitor Performance, Capacity & Everyday-Use GuideEfficiency & running costMonitor Efficiency, Energy & Running-Cost GuideFeatures & valueMonitor Features Worth Paying For — Value Guide

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Read the Official LG Guide