Resetting Dell Inspiron N5110 to factory settings

About a year ago, I reset my inspiron n5110 to its original settings without any problems.  I need to do another reset.  When I turn the computer on and hit the F8 key, I get a menu selection of several options.  I highlight repair my computer and hit enter.  It responds with windows loading files.  Next my windows sign in screen comes up.  After signing it, it starts windows 7 program.  Nothing about resetting computer.

Whats up.