I have had this same problem with other disc`s in the 3108. I can take the disc out of the 3108 and put it in my Pioneer DVL-909 and it works fine. I contacted Toshiba corp to look for answers and just got the run around. Toshiba products are over-rated junk. They offered no support!! I suggest you do as I had to. Sell it to someone else and purchase a better brand.