What other drives do you have in your system on your IDE channels and is your DW-1650 connected as a master or slave?
Could be that the jumper on back of DW-1650 is not set correctly for configuration you've placed drive in or a Hard drive is taking issue with DW-1650 being slaved behind it for same reason.
Check jumper settings on 'all' drives.
Some hard drives have 2 master settings: one where it is master and only drive on cable and one where it is master with slave attached.
Check bios settings for IDE devices and whether drives are being detected in bios. (Usually selecting auto detect in bios will bring information up if not already shown)
Immediately after you first turn on PC and it's going through post routine note whether all IDE devices are being detected and shown on screen. Hit pause button on keyboard if it all happens a bit quick to see.
It does sound like a configuration conflict. If it gets through all above prior to getting into Windows then it quite possibly could be a Windows conflict. Check Primary and Secondary IDE channels in 'System Information' to make sure that both channels are working and there is no conflicts with IRQ assignment.