Sorry that I return to an quite old topic but I find an very interesting video on youtube about how to indentify the problem of a Seagate Barracuda 7200.12 series HDD with just a few clicks.
At this moment this video maybe useless for
AdrianJosephSolis but I believe that some users with same issue that will come to this post, will find this solution usefull. Actually drives like Barracuda ES, Barracuda ES.2 , Barracuda DM001, series and more, with similar symptoms can be repared the same way.