I just received my very first DVD burner in the mail yesterday, and installed it as the master. The slave is ad DVD ROM/CD RW drive. Windows XP recognized the drive upon rebooting the computer, so I went straight to burning a preauthored DVD. I used Nero Burning ROM 220.127.116.11 and followed the guide on this forum. The burn was successful at 2X and data verification completed successfully as well. I was using a Verbatim 2X DVD-RW disc. The disc would not play in the other drive, so I checked to make sure it would play a known working disc and it can just fine. The disc would not play in a PS2 or a Toshiba DVD player. I thought that the firmware might be the problem, so I installed what seems to be a popular firmware for this model from: http://club.cdfreaks.com/showthread.php?t=120432 Burning additional preauthored DVDs produced exactly the same problem - a verified and completed burn that will not play in any of my other drives but perfectly fine on the original drive (Using VLC media player) Thank you.