Laptop connected to HDMI cable but unable to cast screen｜BJCast
- Check hardware connections:
- Ensure that both ends of the HDMI cable are securely plugged into the HDMI ports of the laptop and display device.
- Check if the HDMI cable is damaged, and if possible, try using another reliable HDMI cable for connection.
- If the laptop is using a mini HDMI interface, make sure to use the appropriate adapter for conversion.
- Check the driver program:
- Visit the official website of the laptop, download and install the latest version of the HDMI driver.
- If the problem persists after updating the driver, you can try uninstalling and reinstalling the display driver, and then restarting the computer.
- Check display settings:
- In the Windows system, right-click on a blank space on the desktop and select “Display Settings”.
- Ensure that the notebook correctly recognizes the external display device and sets it to expansion mode or copy mode.
- Try adjusting the display resolution and refresh rate to match the recommended settings for the display device.
- Check the power supply:
- Ensure that both the laptop and external display device are powered on and in the powered on state.
- Check if the laptop battery is fully charged to avoid low battery levels affecting the screen mirroring function.
- Check input source selection:
- Ensure that the correct HDMI input source is selected on the external display device.
- If using a TV, try switching to the correct HDMI channel using the remote control.
- Update operating system:
- Ensure that the operating system of the laptop is the latest version, sometimes system updates can solve compatibility issues.
If the problem still persists after trying the above steps, the following possibilities may need to be considered:
- The HDMI interface of the laptop or display device may be faulty and requires further inspection or repair.
- Some specific laptop models or display devices may have compatibility issues. You can try consulting relevant forums or contacting customer service for assistance.
Please note that there may be operational differences between laptops and display devices of different brands and models. Therefore, please refer to the user manual or online help document of the specific device for actual operation.