Who makes the drive? Many of the manufacturers have diagnostic programs you can run to test if its motherboard or read head issues.

If its not making funny sounds (read head / platter damage) you may be able to swap the drive chip guts with another similar drive and get the data back yourself without sending it in. If its under warranty you can get a replacement from the manufacturer if not eBay might have one or some of the other asset recovery chop shops you can find parts for computers servers etc.

Is there nothing in the logs about the drive - eg at boot is it read, are their errors or is it just ignored? Does the BIOS recognise a drive is present or do you get a "no operating system" type warning?