I bought a used Dell D600 laptop. It didn't have a DVDRW, so I bought it from another party. When I try to burn a DVD, it keeps giving me an "invalid disc" error. I have installed the driver, but still with no success. Can someone please help me with this? Thanks.

What kind of drive did you get *manufacturer, model), what kind of disk are you using? Have you tried multiple disk formats? Have you tried multiple disks? What burning software are you using?