I used to burn movies on Maxwell DVD-R's and didnt have any problems. Recently I got a 30-pack and tried to burn movies using them and they attempts did not work. I noticed that the DVD's that worked were 8x and the ones that do not are 16x. The DVD player would not read them nor would the DVD drive. I then bought Imation DVD-R's which are 16x and they work in the DVD player but are not recognized by my dvd drive. Can anyone help me out please. Thanks in advance!