Do you have another working machine alongside with the laptop's hard drive in question. You can download [http://www.stellarinfo.com/windows-data-recovery.php|Stellar Phoenix Windows data recovery software] on a healthy PC and attach the laptop's drive with cable. Run the software and scan the laptop's HDD with the software. If the hard drive is detectable then software will recover files from it. The other case around, if HDD is physically damaged then it would be difficult for any software to recover files. In that case you may need a data recovery services help. hope this helps!!!