In mu post below (June 19, 2011 4:00 AM PDT ) I gave a link that should have solved the problem. If your problem is the same, it should help also. If your problem is different, it might not help.
Since my Windows 7 has never asked me to do a backup, it's not clear (to me) what backup program you used. But I wonder if it's a full (image) backup. You need a really small system and a really large USB stick for it to fit. So there's a chance (alas) that it doesn't even contain your family photo's.
My own family photo's, apart from my normal PC, are stored on a backup disk on another PC, and on an external disk I keep safely stored at work. Other people use some free cloud service (like Dropbox, Google Drive or Onedrive) to keep a backup. Two GB of free storage at Dropbox is good for 5000 high resolution pictures. You can't call that an investment, can you?
Post was last edited on June 4, 2016 1:23 AM PDT