My computer was recently rebuilt. New motherboard, harddrive, and power supply. The motherboard is more uptodate and now uses a SATA harddrive; old one (crashed) was ATA. All other components were retained and reused; ie. processor chip, drives, cards, etc. Reinstalling the software was a bit tedious. Anyway. Now, when I backup a movie my burn speed runs between 1.0 - 1.2x even though I have selected 4x using ImgBurn. Am using all the usual tools and the burn is successful. The disks are Sony +R 8x MIJ - the good TY disks. I am wondering if there is some setting in the Bios or the Software that I am forgetting?? DMA is On. Any thoughts are greatly appreciated.