Graphics for Compaq 510

Need more details here, is the issue when you put in a DVD it does not play auotmatically? Has it ever worked? Did you install something or change a setting before it broke? Do things play OK if you go into the drive letter and play it that way, or from whatever program you use to play video files?

Is autorun disabled? http://www.howtogeek.com/howto/windows-vista/disable-autoplay-in-windows-vista/