Primary IDE Channel is running in (PIO) Mode Not (DMA). I have thought about Uninstalling the Drive and Rebooting to get it to go back to DMA again,
If transfer Mode is PIO then follow the instructions at click here to change.
I have read that this could all be the cause of a faulty (PSU) as cheap one or Badly made ones don’t give your drives a constant Current,
Is one of your Cd drives on the same cable as the hard drive? Bad (hard to read) CDs will cause the IDE channel to drop down its DMA eventually ending up in PIO mode.