If Alexa isn't responding, there are several steps you can take to resolve the issue. Begin by checking the internet connection and ensuring your Alexa device is properly connected to the Wi-Fi network. Verify that the device's microphone is not muted, and there are no physical obstructions affecting voice detection. Restart the Alexa device and the router to refresh the connection. Make sure you're using the correct wake word ("Alexa," "Echo," "Computer," or "Amazon"). Check for any ongoing outages or issues with Amazon's services. If the problem persists, consider unplugging and reconnecting the device or reaching out to Amazon's customer support for further assistance.