I tried to burn a DVD and when it was time to write the system said the media was incompatible. The media i am using is Shintaro dvd-r 8x. Can some please tell me why this has happened and how I can fix this. The previous media I used was the Shintaro dvd-r 4x and this was fine. I could not purchase the 4x media and I assumed 8x would be fine.