The message comes up randomly. If I knew how to display it on this forum I would, but since I can't here goes. It says windows- no disk exception processing message c00000 13 parameters 75b65f7c4 and then repeats the last 9 digits several times. I can sometimes delet it by hitting the X several times or if that fails by hitting continue or cancel. The dvd drive has a problem in that it will not open with the buttton. I have to go through my computer and click eject.