I have a Pioneer dvd-rw DVr-109. It stopped burning music cds properly and started ejecting the disc after 5-10 minutes of recorded material was burned. I tried sonic stage, windows media player and shareaza but the same result each time. I was trying uninstalling and reinstalling the hardware, cleaning it with DVD cleaning cd and reinstalling Nero, for a change. Once I uninstalled the hardware it reinstalled itself but has no decoder The message is” there is no W2k compatible decoder installed………….a DVD decoder device or software is required……….a DVD drive alone is not sufficient. The computer could play DVD videos before.