Multimedia/ navigation screen went off completely dark 2018 DS7 crossback 1.6 benzine

my 2018 1.6 benzine 225 pk ds7’s multimedia screen (middle) started flashing with the attached warning message, and after few months it went off completely dark. No usb was connected. I took off the accu cable and put it back on but nothing has changed. I kind of hope that it shall be an easy fix from the check of the cables or fuses. But dont know to do it myself.
picture attached
Anyone has any experience with somethink like this ? Thanks