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The display screen (TV or LED wall) is showing "No Signal" or "HDMI Cable Disconnected"

This guide offers troubleshooting steps for a "No Signal" or "HDMI Cable Disconnected" message on a display screen. It suggests checking HDMI cable connections for looseness, power cycling HDMI extenders if used, and ensuring the correct input source is selected on the TV using the "Source" or "Input" button on the remote.

If your TV or LED wall is displaying a "No Signal" or "HDMI Cable Disconnected" message, follow these steps to troubleshoot the issue:

  1. Inspect HDMI Cable Connections:

    The most frequent cause is a loose or unplugged HDMI cable connecting your computer (PC) to the display.
    • Carefully unplug and firmly replug both ends of all HDMI cables. Ensure they are fully seated in their respective ports on both the computer and the TV. Even a slight looseness can interrupt the signal.
  2. Address HDMI Extender Malfunctions:

    If you're using an HDMI extender for a longer connection between your computer and the TV, the extender itself might be at fault.
    • Power cycle the HDMI extender. Unplug its power adapter for 10-15 seconds, then plug it back in. This often resolves temporary glitches.
  3. Select the correct Input Source on the TV:

    Even with correct cable connections, the TV might be set to the wrong input channel.
    • Use your TV's remote control to find and press the "Source" or "Input" button. A menu will appear with input options (e.g., HDMI1, HDMI2, AV, Component). Select the correct HDMI input your computer is connected to (e.g., HDMI1). If unsure, try each HDMI option until the display appears.