firsty check that your jumpers are set to master and slave respectivly, depending on what config you want.
next, althought its usually not required, it MAY be a good idea to plug the cables into the drives in the right order.... i.e. the master i think goes to the connector in the middle of the IDE cable, the slave at the end.
also consider swapping over the IDE cables too, see if that has any effect (they can be a tad pickey for wierd reasons)
and lastly make sure they are being detected correctly in the bios... detect them manually then set them to autodetect. maybe consider a bios update.
My tech advice here is not free. Email your credit card detials to firstname.lastname@example.org :smile: :wink: