Hello! Hopefully a simple fix macfriends! I just burned 3-4 dvds and when trying to burn the last one my Macbook wouldn't recognize it- when inserted the blank DVD no icon appears on desktop- and after a few minutes, it ejects. I tried a few different dvds to be sure it wasn't one faulty one. Also restarted the computer and also reset the System preferences for CD/DVD. Any help? PLEASEEEEE thanks!