Rasperry Pi + Hass.io doesn't connect to my LAN

Hello,

I installed hass.io on my rasperry pi 3. The first run was perfect - I waited about 20 minutes and then I could reach the installation with the IP of my Raspberry Pi.

Yesterday I shut down the raspberry by disconnect the power cable and today I wanted to start the raspberry by plug in the power cable again, but the raspberry doesn’t connect to my lan…

I use a ethernet cable

please help me …