How to get rid of the signal: no command?

Hi, I just got my fairphone and i just went througha few steps like install the wifi and the gogole app.s after restarting i got the sign: no command and a green and red triangel picture on the screen. when i want to turn off my phone i get the warning on top : android system recovery … what can i do to continue and get rid of the : no command picture?? please help me


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