when connected to computer via USB, the hard drive power lights on, then after half an hour the drive starts to spin and shows up all files on windows then it stops spinning and disappears immediately. when reconnecting it makes the same problem again. Is it problem with the casing or the drive gone bad?
More aboutmybook problem
Check in the properties of the drive and set it so the computer can not turn off power to it at all and see if the problem persists.