Send it back to the mfg for repair if they offer such service.
Send it to OnTrack or another data recovery shop and hold onto yuor wallet....it'll cost you dearly !!!
Depending on what the power is connected to...maybe just the logic board, you might be able buy another HDD just like the one you have, remove that component from the new HDD and put it on the old HDD. Once you get the data off, wipe the drive, remove the logic board board and trash it.
My final comments....BACKUP BACKUP and BACKUP. If you don't, you'll just be sorry now, later or out a lot of money to get your data off a failed disk. At today's prices ... no reason not to have a second hard disk in almost every desktop.