how to restore your personal files after you perform a custom installation of wi

[BBDUNFORD]

I had to reinstall my windows vista.because windows defender would not go on.this fixed the problem.but I lost all my personal files.been told to go to search type drive:\windows old in the start search box.and then click windows old in my programs list.tried this but nothing happened .i have windows vista .ultimate.so why cant I rein store or find my lost files.please can you help.i have been told it is easy .but when nothing comes up .i am not so sure. 

[quaxo]

What kind of disk was used to reinstall the system? If it was a restore disk from a manufacturer, your files are most likely gone as these usually restore the computer to a factory state.

[Allan]

How exactly did you "reinstall Windows"? Step by step - what did you do?