Power on with no display

Note: If it is a new device with power light on but black screen, it is very likely a connection or driver issue, not a major fault.

Quick Troubleshooting Flow (Recommended Order)

1. First check the monitor (power + input source).

2. Replace cable/port.

3. Check host power light .

4. Connect to another monitor to determine if the issue is with the host or monitor.

5. Reseat RAM

1.Monitor/External Device Issues (Most Common, Accounting for Over 50%)

• Causes:

  • The monitor is not powered on or the input source is set incorrectly (defaults to HDMI1, but you connected to HDMI2).

    • 

  • Monitor malfunction or entered power-saving mode.

  • Screen displays “No Signal” or goes completely black.

    • 

• Troubleshooting:

  • Check if the monitor’s power light is on and press the power button.

  • Use the remote control/buttons to switch the monitor's input source (Input/Source).

  • Test with a different monitor.

2.Connection Cable/Port Issues (Very Common)

• Causes:

  • HDMI/DP/VGA cable is loose, damaged, or of poor quality (cheap cables often cause unstable signals).
    • 

  • Ports have dust buildup, oxidation, or damage (HDMI ports are not easily damaged, but frequent plugging/unplugging can cause poor contact).

  • In multi-monitor setups, the system outputs to the wrong port.

• Troubleshooting:

  • Replug the cable (unplug and plug back in firmly).

  • Replace with an original/high-quality HDMI 2.0 cable (often included with brands like GEEKOM).

    • 

  • Try a different port (on both the host and monitor).

  • Clean dust from the ports.

3.Host Hardware Issues

• Memory Issues:

  • During long-distance logistics transportation, the outer packaging was subjected to intense external force and shaking, causing the internal RAM module of the device to become loose. When the device was powered on, it detected abnormal memory status and failed to pass the hardware diagnostic program, becoming stuck at this stage.

  • Troubleshooting:Reseat RAM sticks (requires opening the case).

• Special Hardware Fault

  • Not all malfunctions have an identifiable cause. There exist unknown hardware-related failures — for example, damage to a specific component that affects display functionality, which remains unresolved even after extensive testing.

  • Troubleshooting:If the issue persists after troubleshooting using other methods, please contact customer support for further assistance.

4.Software/Driver Issues

• Causes:

  • Graphics driver crash or incompatibility (often occurs after a system automatic update).

  • System resolution/refresh rate set too high for the monitor to support.

  • Display-related settings have been configured in the BIOS.

    • 

• Troubleshooting:

  • Test with external monitor (if system loads but no output, keyboard lights respond).

  • Enter safe mode by powering off three times consecutively after the computer is turned on and powered up.

  • Reinstall graphics drivers (download from Intel/AMD official sites).