To address the issue of your laptop screen showing a white or black screen after coming out of sleep mode, you can try the following steps: 1. Hardware Check: - Check the physical connections between your laptop and the external monitor to ensure proper connection. If you're using a docking station, make sure all cables are securely connected. - If you have the option, try connecting your laptop to a different external monitor to see if the issue persists. 2. External Monitor Settings: - If the external monitor works fine but the laptop screen does not, you can try pressing the Windows logo key + P to bring up the projection options. This can help you switch between different display modes. 3. Update Graphics Drivers...