if you can get to the hard drive check that is spinning and se in the bios. if the drive not showing up in the bios it may have died.also is there any clicking from the drive (head crash or berring whine??) thgere are disk like hirum boot cd that you can boot from and run hd tune and ws/seagate tools to see if the drive still health and if any data still on the drive.
I got HDD checked and i was told it has no data. I have replced with a new seagate HDD 500GB. Can anyone guide how to confirm if the hard disk data is not recoverable