I recently found a Dell Studio 1558 running Windows 7 Home Premium in the trash, and it works fine. I would like to do a full system reset to restore the laptop to factory condition. How can this be done? I have already tried pressing F8 on the startup screen, but all it would do is stop the loading bar. Then I tried leaving it for a while, and after 20 minutes it had done nothing. Many retries later I am still where I started. Just a note, the computer keeps telling me that I need to get "genuine Windows Software" and other similar messages.