Have you got Nero and Roxio both installed in XP? I used to have Nero5.5 and ECDC Platinum on the same Os and they worked ok together but had reports form others who complained of conflicts. However, I recently upgraded to Nero 6 with ECDC 6 and they refused to be in the same bed. Unsinstall Roxio and there's a chance that Nero will burn OK and Vice Versa.I can't remember at the mo but you can enable/disable DMA from w/in windows. Someone will come thru' with this.