I don’t have any hard drives connected to the Pi, only the SDCard. I’ve even tried to burn the image on a USB Key to see if it was better.
I use the Raspberry Pi Imager to burn the SdCard, is it the right way to do it ?
I’m really sorry but what did you mean by „burn the latest buster image“ ? Is it the Raspbian OS ? If yes, I’ve already tried it (done it one more time today), but what should I do after ?