I have a 500 GB Seagate internal hard disk attached to my desktop. off late I am unable to read my hard disk. Although the same can be seen during boot but it does not show in the " My Computer " .The Hard disk is hardly 15 months old. Can anyone suggest a solution? I have very important documents in the Hard disk. Also I at times do get to see the hard disk and can also use it but sometimes it disappears completely.