If you can't retrieve the addresses, then it means they have been lost while the computer crashed. You should have backed up the data to be able to restore the addresses now. Unfortunately, it's impossible to get all the addresses, but there is a way. Install Recuva and then use the Wizard to choose the partition and the file types. Once you find the correct files and they're marked with green, it means you will have the possibility to recover the file. Right click it/them and choose Recover, but make sure to select another partition.