Ensure the monitor is set to the correct HDMI input source and that the cable is firmly connected to the graphics card (GPU) output, not the motherboard.


  1. Verify Physical Connections:

    • Unplug and re-seat the HDMI cable at both ends.

    • Note: For desktop PCs, ensure the cable is plugged into the dedicated Graphics Card (GPU) port rather than the motherboard video port.


  2. Manual Input Selection:

    • Use the monitor's OSD buttons to access the [Input Select] menu.

    • Manually select the corresponding port (e.g., HDMI 1 or HDMI 2).


  3. Cross-Test Hardware:

    • Replace the HDMI cable with a certified High-Speed cable (the original cable provided is recommended).

    • Connect the monitor to another device (e.g., a laptop or console) to verify hardware functionality.


  4. Check Power & Boot Sequence:

    • Ensure the power LED on the monitor is lit.

    • Try turning on the monitor first, followed by the PC.


Note: * Tip: High-resolution monitors (e.g., 4K) require HDMI 2.0 or higher cables. Using an older or low-quality cable may result in a "No Signal" message.