If your AMAZON Echo Show 8 is stuck or frozen, You can perform a soft reset operation. Check out how to force restart . As a result your AMAZON Echo Show 8 should reboot and start running again. Click here to find out more about soft reset operation.
First method:
- Start with clicking Mute Button and hold it for about 3 seconds.
- Confirm you want Power Off AMAZON Echo Show 8, tap RESET.
- Click Mute Button and hold it for 3 seconds, to turn on AMAZON Echo Show 8 again.
- Great work! You Soft Reset AMAZON Echo Show 8, Alexa voice control will work correctly.
Source : hardreset.info