Try connecting your drive to another computer and check whether your drive is accessible. If it is accessible then try our Data Recovery Software based on the File system present use either NTFS Data Recovery or FAT Data Recovery Software and recover your data. We provide free demo version for all our software. The demo version will give you fair idea of the chances of recovery.
If your drive is not accessible then please contact Disk Doctors Data Recovery Services division and start a data recovery case. Disk Doctors Professional Data Recovery Labs are available in many locations across the globe.