Personal files missing from backup

I backed up using an external drive prior to resetting HP desktop to factory settings.
When I tried to restore the files I couldn't find them in any of the libraries. Where did they go? I did reinstall programs like Microsoft Office 2003. I did look at the folders in the backup, ie Documents, Pictures & Music. They were all empty. I used the backup through the control panel.

How do I find them & put them back in the right place? Running Windows 7 64 bit
Home Premium Edition.
Thank you

Back up is called: Gavid-PC\Backup Set 2012=06-30 111304

Hi Shawn,

Thank you for the response. I went through 19 backup sets. Still could not find any files that I am looking for. These are mainly word docs I created in Microsoft Office.

Shawn, no I'm not sure. I followed the prompts when setting up the Windows backup. I assumed all folders were being backed up.

Ah, I do see a system image (D) created on 7-12-2012. Does that help? Also I re read the backup settings. Using the "Recommended settings" it does say that personal files & folders are included. As that I believe I chose that setting initially, I'm a bit at a loss as to why they don't appear to be there?