I'm a newbie so if I'm in the wrong forum, please redirect me. I've been fighting this problem for 4 months. Until then, I had been able to burn DVDs using either Nero (which came with my IOMagic external DVD) and Deepburner. Suddenly, it stopped working after I loaded Norton Save and Restore. I have worked with Symantec (Chat), Nero (e-mails), Gateway(Chats - maker of my e-machine), IOMagic (chats), Radified (forum), and some others I don't even remember. IOMagic even thought it might be the hardware and kindly replaced my unit. Problem is basically described as shown in Deepburner: and in Nero as: The DVD unit is external and uses USB: . I have tried writing from directly connected drives (C:\) and USB connected drives. I have tried burning at 16X, 8X and 4X. I had added/updated Adaptec ASPI. I have: Unloaded any Roxio products using RoxioZapper Unloaded Nero using: CleanTool DriverClean InCD-CleanTool Reinstalled Nero [At this moment Nero is unloaded] Un-installed and re-installed: The drivers for the burner The Primary IDE controller to enable DMA. One of the "Chats" recommended instaling 'Intel Acellerator'. This Hide/Deleted/ ? the Advanced Tab on my Primary/Secondary Controllers --> Properties in Device management (that was no fun at all as the advice I got was to reload the OS. Lucky, I found the solution with Google after a heart-attack couple of days). I think I have done just about everything anyone has written about on the net. Please H E L P !!!!