Good time of the day for everybody! Here is my problem: I've got PIO mode for my DVD-drive. Even when I try to change it by checking "Enable DMA" in Device Manager - nothing happens, still in the PIO 4 mode. OS: Windows 7 x64 7100 Motherboard: ASUS M2R32-MVP CD\DVD-drive: ASUS DRW-1814BLT SATA Latest drivers from AMD for southbridge were tried, and still nothing. I've played with BIOS settings, reconnected SATA devices to another ports (like russian roulette ) - PIO again. Maybe Windows 7 wants PATA DVD-drive? P.S. Both of my HDD SATA drives works in UDMA-6, so here is all fine.