A hard drive that isn’t spinning could indicate a mechanical problem. For the safety of your essential data, you should turn off the drive or computer as soon as possible and contact us for further advice.
If a hard drive spins up and then stops it could indicate damage to the platters inside the housing. Damage can occur when the read/write heads scrape the surface of the drive platters. This condition is known as a head crash. To ensure the potential for a successful data recovery, do not leave the drive powered on or allow it to cycle on and off. The longer a drive with a head crash is left running, the more damage that can occur.