Also, when was the last time you checked to see if your firmware for your burner was up to date? Might be worth a look see. Also try uninstalling your burner from device manager then reinstalling it fresh. If you said 9.0. is doing the same thing as 8.6. then like stormjumper said check your ide cables. Also make sure your burner is the primary on your secondary channel and that the jumper is set right. I had mine set wrong in the beginning and when I fixed it, made a world of difference. ~ Mike