I Had it working before but i got a new pc and changed alot but it now doesnt read or write dvds or cds.Im on windows xp professional.

Hey there Amd it may be DMA mode not enabled, this should help.

Enable DMA mode using the Device Manager:

1. Open Device Manager.
2. Double-click IDE ATA/ATAPI Controllers to display the list of controllers and channels.

3.Right-click the icon for the channel to which the device is connected, select Properties, and then click the Advanced Settings tab.

4.In the Current Transfer Mode drop-down box, select DMA if Available if the current setting is "PIO Only."

If the drop-down box already shows "DMA if Available" but the current transfer mode is PIO, then the user must toggle the settings. That is:
•Change the selection from "DMA if available" to PIO only, and click OK.
•Then repeat the steps above to change the selection to DMA if Available.

Nope The 2 ide channels i have are both dma.Any other ideas.Also under my serial ata controller it doesnt say anything for primary or master chanels if it helps.