reformatting dell windows 7/ 64 to original factory settings

i am selling a laptop and cant remember how to restore to original factory settings…does anyone know how to do this?
thanks

Hi drensmith,
See if any of this content can help you:

Help & Support Dell
How to Restore Dell Windows 7 Computer to Factory Settings (Youtube)
Dell Laptops - Restore factory settings
Dell Inspiron - Restore to factory default settings

i sent away too dell for reinstall discs because i couldent get pc to turn on, told them model#. so rather than return them i got online (after d.l. a new driver, then i took the long/educational route…downloaded bit by bit…its working great now.