Go to control panel,system,hardware,device manager,IDE ATA, now wherever your burner is installed primary or seconary IDE channel double click. Now click on advanced settings look beside current transfer mode. It might say DMA already if it says PIO that is the slow mode. To change you must click on driver and uninstall. Now restart Windows. Windows should recognize your burner as new hardware and install drivers for it. The transfer mode should now be set at DMA.