If you reinstall Windows, then only recovery houses typically can get files back. Try drivesavers.com and ontrack.com
Too bad you didn't get the files out idea before you installed windows. Then it could have been a home project.
There was a spark. Machine called for windows install disk. I put it in and it reinstalled windows. I lost data from January to June. Now HDD won't boot. It kicks in for 2 or 3 seconds and stops running. What to do, what to do.