I accidentally hit ‘stop’ instead of ‘restart’ when making a minor name change in one of my entity Ids. I now cant get the pi up and running hass.io again. power cycling the pi just brings on the red power light but shows no green activity light.
If you have an hdmi cable laying around, plug it into the PI, power toggle and watch what happens. Sometimes a cold boot on a PI/hass.io can take about 10 minutes which seems like an eternity when you think you hosed something and can’t watch to see where you did.