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[LG Monitor] How to Install OnScreen Control (OSC) and Use Its

OnScreen Control (OSC) is a dedicated app that lets you easily manage [Screen Split], monitor settings, and [Picture Mode] on your LG monitor using a mouse. If the app does not launch properly or the menu does not appear, make sure that your LG monitor is connected correctly using a genuine cable and that your PC’s display setting is set to [Extend] mode.

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TroubleshootingMonitors

What to Check First

  1. If the LG monitor is not properly connected to your PC or laptop, or if you are using a third-party monitor, some OSC features may be limited.
  2. Communication between the monitor and PC via DDC/CI may fail if a non-genuine cable or adapter is used.
  3. If the PC’s graphics driver is not up to date, the OSC menu may not appear or may be disabled.
  4. 1.Go to the LG website and select [Support] from the top menu.
  5. 2.Under [Support] or [Service], select [Manuals & Software] or [Drivers for Downloading].
  6. 3.Enter the exact model name of your monitor (e.g., 27GN950) and select the model from the search results.
  7. 4.Download the installer that matches your operating system (Windows or macOS).
  8. 5.Open the downloaded file, extract it if needed, and run the installer to complete the installation.
  9. Screen Split: Lets you divide the monitor screen into multiple regions to match your work environment.
  10. Monitor Settings: Lets you adjust brightness, contrast, and other monitor settings, and perform firmware updates. * Note: A USB connection between the PC and monitor is required (USB-C to USB-A, USB-A to USB-B, USB-C to USB-C, or Thunderbolt cable).

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 [LG Monitor] How to Install OnScreen Control (OSC) and Use Its Features?

If the LG monitor is not properly connected to your PC or laptop, or if you are using a third-party monitor, some OSC features may be limited.

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

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Read the Official LG Guide