If the computer does not see the drive at all, that would indicate a fatal heart attack.
The possibility is high that data is still on the chips, but it isn't accessible via the computer.
If you can find a reasonable repair facility to fix the dead part, you may get the data back.
Extracting the data from the chips by a data recovery facility would be very pricey. If your data is worth that, you now have motivation to back it up.