Hello, it is the second time I start my raspberry pi 3 b+ and I am blocked on a flashing rainbow screen. I reformatted my SD card and put NOOBS from the download part of the website, nothing changes. I have put the Lite version of raspbian with Etcher and the only change is that I have 4 raspberries appearing on the screen just after the rainbow screen.
Looking at some forums I see that power supply could be an issue but I have the official power supply.
Any help would be appreciated