Rasberry Pi is not opening(Rainbow Screen)

Hello guys.
I am using rasberry pi 3B model for ROV, but when I tried to open it, it doesnt open booting.
I did all the installing steps correctly(i hope) but rasberry gives me a rainbow screen.
How can I solve this problem?

Hi @enseri, welcome to the forum :slight_smile:

This comment should explain. It’s about BlueOS (rather than our old Companion Software), but the same reasoning applies. Feel free to follow up if you’re still confused afterwards.