Hi there Rutherona Molo,
That is really unpleasant.
Have you tried using different cables? It may be a good idea to do so.
If the issue persists, you can try using some software tools on the drive, in order to see if the data stored on it would be recoverable: https://www.lifewire.com/free-data-recovery-software-tools-2622893
If you manage to retrieve your data, you can test the drive afterwards: https://www.lifewire.com/free-data-recovery-software-tools-2622893
In case the drive can't be accessed by software tools though, then I believe you have a couple of options:
- Contact a data recovery company, if the data stored on the drive is really important.
- RMA the drive if under warranty.
Let me know in case you have some more questions,