Ive tried bloody everything but both my PATA dvdr writer and PATA 200gb harddrive are exhibiting slowdowns during access. According to device manager UMA mode is not applicable it used to say PIO which i assumed was the problem. Ive used the Dell PIOtoDMA2 Push software and that doesnt fix it either. Before I did a Reformat the drives were working fine. Also the Bios cannot see either drives as well.