TRY This.
Making sure DMA is selected
Make sure the transfer mode is set to DMA:
Click Start , and enter "device manager " in the Start Search field.
If User Account Control opens, click Continue .
Click the plus sign next to IDE ATA/ATAPI Controllers .
There are ATA Channel 0 and 1 listings. Right click the channel the DVD drive is using and select the uninstall device button to remove the device.
Restart the computer to reinstall the ATA Channel settings. A message indicating that the device is ready to use will appear when Windows has completed the hardware installation