there was a thunder storm and a power surge.I heard a noise come from the hard drive and it went off and never came back on.What can I do?
A disk drive is two parts. A mechanical drive and disk platter that holds data. And a computer/controller. That simple.
Buy a disk drive with the exact same part number. Remove that computer board. Replace the defective drive's computer with this new one.
Mounting screws will be torq type. Typically a less common size less than 10. Find these in Sears Hardware.
Drives can even be located in used computer stores. Search for names such as Second Source Computer or Surplus Supply or computertradeexchange.com. Use these examples to also find other sources.
If the original failure is only electronics (a classic manufacturing defect), then you have recovered your data. Now learn about backups.
If failure was mechanical, then you have a new replacement drive to fill with new data.