Hi, I have a laptop Presario X1015us, with a DVD+RW DW-P50A (firmware updated to 1.8f). I am also installed Nero Burn Rom 6.3.1.17. I am new on the DVD burns and I bought a Sony DVD-R 120 min or 4.7 gb (DMR47) and I noticed that the back of DVD is purple.

I want to burn some files, totalizing 3.35 gb. Nero recognized the blank DVD, I selected all my files and no mutisession on DVD-ROM (ISO) option on Nero. However, after cached all files, it stopped saying "Illeagal Disc", burn process failed at 1x (1.385 KB/s).

What would be the problem? On the DVD-R buying? on Nero?