OK, basically I wanted to enable the DMA support for my k7ama mobo w/ a 120gig Western Digital HD. The reason I wanted to do this so my DVD burner would run a lot quicker I enabled this in bios, but when I went back into device manager, the DVD burner had DMA on, but my HD still said DMA off?? It still says primary- transfer mode is set to DMA if available and current is PIO mode for my HD. So someone suggested this: You need to uninstall primary IDE channel and after restart you should have IDE DMA 5 enabled for you first IDE device (HDD i did this but when i restarted, i got an error in windows when it was attempting to reinstall the primary channel drivers. The error i get is that ' hdc error driver is not intended for this platform" In addition to enabling DMA on in BIOS, what I did was my Western Digital HD comes with a 'ultra ata/100 management' disk and I ran that as well and I guess I 'enabled' DMA. I had an option of choosing b/w ata 33/66/100. I tried to 'disable' it again (thru using the disk), but still I get this "hdc error driver is not intended for this platform" error i switched back everything i changed and i still get this error Anyone know how to fix? There's a big yellow ! when I go into device manager and look at my primary IDE controller (actually that isnt even there anymore, just says 'unknown device') EDIT: I ran nero info tool, it says DMA on the HD is now ON (off before) and I was able to burn a DVD in 14 min, rather than 30 But I still dont have the primariy ide channel configured properly. PICTURE of problem: http://www.geocities.com/vanbiesbrouck34/error.JPG copy and paste in browser, thanks in advance PS:sorry for the long post.