I was trying to update the firmware of my DVD-ROM and CD burner (NEC 12x DVD & NEC 12X10X32)...before the update...only the DVD-ROM can play audio CD...the burner would play too...but no sound coming out of it. Now, after the update, both drives can play audio CD with sound, but while playing in the burner the HD would flash with the burner...WHY? I have my DVD as slave and CD burner as master now...I change the jumper setting on the back of the drives to try different setting....but nothing solve the problem...please give me a hand.