Have you given any thought to using thumb drives (usb sticks, pen drives...) ?
They hold a lot more pics, and are generally easier to use.
If the dvd is seen in "computer", have you double clicked on it there to attempt to open it .......that may show you what is already on the dvd........if you have a pic you wish to transfer to the dvd then you would right click on the pic and select 'move to'...or 'copy to' ...dvd (the dvd may have a different name to identify it../? )
Sorry if I appear to be grasping at straws here......but I am !....I dont have a working dvd draw on this tower to experiment with.....so I am having difficulty giving precise instruction !