Before trying other data recovery programs, try this one first.
It's by far the simplest and effective data recovery I've tried. It recovers my hard drive from deleted partition which has my backup .iso installation disc and .tib acronis backup system.http://www.ntfsrecovery.com/
Try first if it can recover your data before buying, and don't worry about it, it won't damage or ruin your data if with the trial version.
You might be able to find a free data recovery but none is as effective and simple as this one that I know.