Okay so I have busted the HDD on my dell inspiron laptop and I'm hoping there is a way that i can get a new HDD and save my old OS. All I have to work with is the product key on the bottom of my laptop. Can I call a support line and give them the product key and have them send me a disk so I can put it on my new HDD? Or are there any other possible options? I'd hate to have to get a new OS and HDD if I can keep from it.