First of all ensure that the drive itself is not broken (it happens). Try reading it directly, on another computer, then by attaching it to an external powered USB hub which should supply more power than an ordinary USB port. You can use a tool such as Paragon Partition Explorer to verify that the disk is indeed readable, albeit possibly damaged at a logical, not hardware, level.
As a last resort you may try extracting the hard drive from the Pininfarina enclosure and connect it to an EIDE or SATA interface, as appropriate, on a motherboard. This is best done by a computer knowledgeable person.
If the drive isn't "seen" in any way or makes whirry or clickety noises, it is likely damaged and requires expert maintenance or a data recovery service.
Answers & Comments
First of all ensure that the drive itself is not broken (it happens). Try reading it directly, on another computer, then by attaching it to an external powered USB hub which should supply more power than an ordinary USB port.
You can use a tool such as Paragon Partition Explorer to verify that the disk is indeed readable, albeit possibly damaged at a logical, not hardware, level.
As a last resort you may try extracting the hard drive from the Pininfarina enclosure and connect it to an EIDE or SATA interface, as appropriate, on a motherboard. This is best done by a computer knowledgeable person.
If the drive isn't "seen" in any way or makes whirry or clickety noises, it is likely damaged and requires expert maintenance or a data recovery service.