Turn off the computer.
Call professional data company to make a more precise evaluation and to certify that the problem is really loss of data.
Remove the media (hard disk) from the computer carefully.
Do not let any person without specialization in this area open your hard disk or execute programs that promise to recover your data.
Do not reinstall the operating system or any other kind of program.
Avoid turning on and turning off the computer repetitive times to try to make the hard disk work, because this could damage it even more and make the recovery of data impossible.
If you feel or sense strange noises in your hard disk don’t even try to turn it on again.
Avoid using any utilities program to reconstruct the FAT tables and partitions. These programs could make the recovery work even more difficult and sometimes impossible.
If it was necessary, we could tell you if the program you are trying to use could or not have an influence with the data recovery.
Before sending your media to a professional data recovery company, make sure that it will really need the information that is within it.
Send your media to a specialized company in data recovery:data recovery specialists