You can reset Alexa easily on an echo device that has buttons. First find the volume down and mute buttons. They should be on the top of the device. This method works
for the newer generation 2 versions of the Alexa Echo and Alexa Echo Dot. The button with a microphone as an icon is the mute button and the volume down button should have a minus sign icon on it.
Press down gently on both the buttons for about twenty seconds and you will notice the light turning orange. After this, the light will turn blue. You need to wait for
a few seconds and the Echo will now enter the Setup mode. You will notice that the light ring turns off and then on and then turns orange again. This indicates that you’re in the setup mode.
To proceed further, download the Alexa app on your device. Alexa app for android is also available. For Android phones, it is available on the Google Play Store and for
iPhone it is available on the App store. Log in with the ID and password that you use for your Amazon account.Now you can setup Alexa Echo . You have to open up the Alexa app to start. This will be a blue speech bubble and it should have a white outline.