Quote Originally Posted by Sirrahsim
If you are trying to watch a movie DVD you will not be able to unless you have a special plug in. Many cd/dvd drives come with the plug ins but mine, for example, did not. What happens when you put a DVD in?

edited to add: A plug-in is basically a piece of software that you download for a fee. It is not something that you physically plug in!
Actually, an plug-in is found for free online mostly. Did you install the software that came with your cd-rw/dvd drive? There are multiple reasons this could be caused by: Malfunction in the cd-rw/dvd drive, bad connector, defective card, the list goes on. I cant give you an exact diognostics unless you provide the exact specifications: Memory, CPU, CD-RW/DVD drive maker, Computer brand, and year computer was made.