|Hard drives are only repaired for the purposes of data recovery and the cost is much higher than for a new drive. I assume this is an external drive. You could try removing the drive from the enclosure and attaching it directly to a computer but I wouldn't hold out much hope of this working. You drive almost certainly has internal damage and needs to be replaced.|
If you do not have a backup of the data on the drive, why not? Hard drives fail and data can be lost for a variety of other reasons as well. You need to be prepared when, not if, something happens.