Boot loop!

[Franci01]

Hi, I have finally installed Mac OS sierra on my pc and it is working fine but when I have restarted the pc I have selected the ssd with sierra but after that the program show me the screen below and than it reboot like a loop (sorry for my bad English but I am Italian)

 

[BreBo]

Please read the rules.

Profiles need to contain at least your primary system to assist others with helping you.