If you observe that hard drive is not spinning up, verify that power cable is properly attached and is in good condition first. If you find it correct, then probably your hard disk is physically damaged. You need to turn off the system immediately and use anti-static and shock-proof material to pack it and send to a hard drive recovery service center. In this recovery service, experts deal with physically failed hard drive to extract lost data. Hard Drive Data Recovery experts follow some standard and advanced recovery techniques, like replacing or repairing damaged internals, displacing misaligned platters etc. Stellar Information Systems Limited offers industry's leading Hard Drive Recovery service for all sorts of physically damaged hard drives. It is offered through Class 100 Clean Rooms. Stellar provides complete and confidential disk recovery service for all makes of hard drives, including SCSI, SATA, IDE and EIDE.