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Cross-test the dock with another USB port on the laptop
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Restart the laptop with the dock connected to the laptop
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Cross-test the dock with another video cable (if possible)
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Cross-test the dock with another laptop (different brand, if possible)
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Uninstall and reinstall the driver
https://en.j5create.com/pages/drivers/#jcd543p-show
If issues persist after trying all of the above, please contact Multimedia Technology
JCD543P Troubleshooting
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