1. Check if the external graphics card is installed correctly by following the manufacturer’s instructions

i. If needed, uninstall and reinstall the external graphics card according to the manufacturer’s directions

2. Check the power supply to ensure it’s capable of handling the power needs of the external graphics card
3. Make sure the laptop is compatible with the external graphics card and that you have the necessary ports to connect it
4. Ensure the external graphics card and its driver is up to date by downloading the latest version from the manufacturer’s website