How can I retieved my backup

I have been backing up my server to a share folder on another server. while the schedule backups were running we encounter a power problem causing both server to shutdown abruptly and when I returned the next morning one of the servers had fail. I try restoring from the backup share but it seems to be corrupt how can I restore my files? is there a recovery tool that I can used to get the previous day backup from the share folder ? 

Thanks