RPI2 prepairing Hass.io forever

I’m a total newbie here and tried Hass.io.
First RPI1: Only show first web “prepairing hass io” for a minute or so after boot. Still possible to ping on local net. Using wired connection.

Next try RPI2b: Showing “prepairing hass io” forever (>24h). Possible to ping, but impossible to troubleshoot.

Any way to enable telnet or SSH for troubleshooting?
Anything I have overlooked?

Tried with different power supplies and other images that works in same RPI.