Recently
recovered many of DWG files on HD with a corrupt partition, however, all the
files recovered are not viewable or recoverable through autocad 2007. Is there
any software available to repair DWG files that someone can refer me to?

You can try DWG TrueView but there are no guarantees.  It is a free viewer used to view, open, edit and convert drawing files.  It is free to download from the AutoDesk website.I have my doubts that you'll have much success.  Good luck just the same.

Any luck with recovering your drawings?  If so, what method did you use?