If the ProWin18/18Data and ProWin19/19Data folders can be resurrected, then you'll be ok....be sure to let whomever is going to help with the harddrive know that these 2 folders are the most important to save.

Then invest in Carbonite or some other auto backup program, Carbonite less than $100 a year and you'll never have to worry about losing a client file (or any other file) again.