What to Do if Your Screen Doesn’t Display on PC (2022)

Last Update date : 2026-06-11
tv connected to pc
Fix Samsung Smart TV screen issues when connected to a PC via HDMI. Learn how to troubleshoot flickering, no display, or resolution problems with certified cables, TV settings, and Input Signal Plus. If your Samsung Smart TV screen flickers or doesn't appear when connected to a PC via HDMI, the issue is often caused by an incorrect resolution, an unsupported cable, or incorrect TV settings. Follow these steps to resolve the issue quickly and ensure a stable connection.

1. Why is my Samsung Smart TV screen not displaying properly when connected to a PC?

Your Samsung Smart TV may not display properly when connected to a PC due to several common issues:

-Using a non-certified HDMI cable that doesn't support high-resolution signals.

-Incorrect resolution settings on the PC or TV that don't match the TV's native resolution.

-Input Signal Plus being disabled, which limits the TV's ability to handle certain PC resolutions.

-PC in sleep mode or incorrect display output settings.

2. How to fix Samsung Smart TV screen issues when connected to a PC via HDMI

  1. Check your HDMI cable: Ensure you're using a certified HDMI cable. Non-certified cables may not support high-resolution signals and can cause flickering or no display.
  2. Restart your PC and TV: Turn off both devices, disconnect the HDMI cable, wait 10 seconds, and reconnect it.
  3. Enable Input Signal Plus: Go to Settings > All Settings > Connection > External Device Manager > Input Signal Plus and enable this function for the HDMI port connected to your PC.
  4. Adjust PC resolution: On your PC, go to Display Settings > Resolution and select a resolution supported by your Samsung TV (e.g., 3840 x 2160 @ 60 Hz for UHD models).
  5. Run HDMI Troubleshooting: Press the Home button on your remote, then go to Menu > Settings > Support > Device Care > Self Diagnosis > HDMI Troubleshooting to check the connection.

3. Supported Samsung Smart TV models

This troubleshooting guide applies to most Samsung Smart TVs, including:

- QN7B series and higher

- UHD models

- Modern Samsung TVs with HDMI ports

4. Additional things to check

If the issue persists, consider these additional checks:

-Ensure your PC's graphics drivers are up to date.

-Check if your TV has received the latest software updates, as they may include fixes for HDMI-related issues.

-Test the HDMI cable on another device to confirm it's functioning properly.

5. Related Samsung support topics

-How to update Samsung Smart TV software

-How to adjust display resolution on a PC

-How to use HDMI troubleshooting on Samsung TVs

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