Depends on how its failing? Usually plugging it into a desktop computer via an adapter, and running a recovery app such as GetDataback would be the first step.
However this only works if the drive s still being at the very least picked up by Windows Disk Management.
If the drive is not being picked up, by anything then a Recovery Service would be the best option.
Then there are other options depending on what kind of failure it has.
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Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.