dma if available isn't the answer.
There's Transfer Mode: DMA if available
Current Transfer Mode: Ultra DMA Mode 2 (or UDMA 4)
This is the one to pay attention to...
Please click on the Reset DMA button in Fab > Common Settings.
This will frequently do it.
If not, please click on the second DMA link in my sig and run the VBScript file.
Near the top of the article you'll see:
1. Click here