You are so right about making sure to put back the two metal rings when you screw back the two (red) 10.3mm screws. I missed putting back one of the rings and read your comment after I had installed the drive and closed the macbook. Everything was working fine, but I went back to open it an leave it just as it was, with both metal (one with a plastic/cloth material around it) plates/rings attached properly. So it is very important to make sure you put those two 10.3 mm screws back with the plates/rings that they hold, exactly as they were before you put it apart.
Lorsqu'il en aura reçu, il pourra afficher un graphique de sa réputation au fil du temps.
Voici un aperçu de ce à quoi ressemble ce graphique :
Aucun point de réputation obtenu pour l'instant.