This is usually due to
HDMI CABLE or interface issues, device setup issues, graphics card driver issues, etc.?
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Common causes and solutions
HDMI cable or interface problems:
Check the cable connection: Make sure that both ends of the HDMI cable are firmly inserted into the interface without loosening or inserting the opposite phenomenon. Check the interface and cable for damage or dust, can be cleaned with alcohol wipe.
Replace the cable: Try using another HDMI cable to rule out problems with the cable itself.
Problems with device settings:
Switching Input Source: Select the correct HDMI input port via the TV or monitor's remote control.
Adjust the computer display settings: On your computer, right-click on the desktop and select “Display Settings”, make sure to select the appropriate mode for the external monitor, such as “Extended Display” or “Second Screen Only”. “Second Screen Only”.
Graphics card driver issue:
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Update graphics card driver: Go to the official website of the graphics card or computer brand to download and install the latest driver.
Reinstall the driver: Uninstall the current graphics card driver and reinstall it to make sure the driver is compatible with the operating system.
Resolution and refresh rate setting problem:
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Adjust the resolution and refresh rate: Right click on the desktop of your computer, select “Screen Resolution”, and adjust the resolution and refresh rate to fit the external device.
Device incompatibility:
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Check device compatibility: Make sure your computer, TV or monitor supports the same HDMI interface specification, and use a compatible HDMI cable.
Power Problems:
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Check power connection: make sure the device power supply is properly connected and the device is operating at the proper voltage.
Hardware failure:
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Contact a professional: If hardware failure is suspected, it is recommended to contact the computer manufacturer or relevant technical support team for assistance.
Software Problems:
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Update the operating system: try to update or reinstall the operating system, drivers, or restore the factory settings.
Specific steps and precautions
Check the connection: Re-plug and unplug the HDMI cable to make sure the connection is tight and not loose.
Restart the device: Try restarting the computer, TV or monitor to troubleshoot temporary problems.
Update Driver: If you suspect a driver problem, try updating or reinstalling the graphics card driver.
Contact a professional: If the problem cannot be solved, it is recommended to contact a professional repairer or the manufacturer for assistance
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