I recently installed a brand new Benq DW1620 drive, which worked perfectly. At the advice of one of the guides here, I swiched it from am IDE Slave to a Master using the jumpers, and it still worked perfectly. Then at the further advice of the guide, I tried to enable DMA for the drive. Perhaps I did it the wrong way. Using Win98se, I went to control panel, system, device manager, then under CD-Roms I selected the drive, hit properties, then the "settings" tab, and in that tab I checked the previously unchecked "DMA" checkbox. When I rebooted my computer, it wouldn't start up at all, but froze every time before loading Windows. The only way I got it to boot up again was to completely physically remove the DVD drive from my computer. I then discovered that if I switched the jumpers back and reconnected it, making it a slave again, Windows would load again and the drive would work. When I went into control panel again, the "DMA" option was back to being *unchecked*. I left it alone. But, if I switch the jumpers back and try making it a Master again, my whole computer fails to load up every single time. It initially worked fine as a master before I tried that DMA nonsense, so what do I do to fix it again? Any help would be extremely appreciated. Please, and thank you very much.