@flames1,
Please be clear:
What
exactly is listed
by the BIOS for this disk drive - you need to state the exact text which is displayed for the make & model information, and the exact size information which is shown. If you can take a photo of the BIOS disk setup screen showing this info, and attach that photo to your reply, then that would be good

Unfortunately for you, although your initial story is unclear in some key details, I
suspect that your drive has suffered firmware damage (I have seen this before after a power cut) and on your own, you are unlikely to be able to recover the data yourself, as
poehere said. The information I have asked you to supply above, will help to confirm or disprove this hypothesis.