Help, son deleted data from MY Book WD 500 GB drive, can it be recovered?

Ok, my son plugged in my book WD external HD into his xbox to see if it would work.  I did not see what it said on the screen but he said it read configure , yes or no, he chose yes.  Now I look on my drive and its totally blank.  It had lots of important data on it.  Obviously the data was deleted and some type of format took place with the xbox.  Is there any way to recover the data or am I totally out of luck.  Thanks in advance.

If you are thinking of professional recovery don’t try anything. See if the drive shows in Disk Management if it does then recovery software might work Recuva http://www.piriform.com/recuva and it’s free and then there are others that are try and buy Like this one http://www.easeus.com/resource/repair-raw-disk.htm

Joe