i have sony dvd writer. i have purchased if just 2 months ago. but now when i do copy any dvd its take very long time. writing speed is also very slow. and it do not write cd more then 32x. whenever i start nero it shows tht ur device is not in dma (direct memory acess mode) i enable dma mode but it cant applied. whenever i use nero it shows same eror again. please help me i have win xpsp2. pentium d processor with intel 865 and 512 mb ram.