do you have the drives configured correctly and if so,are they ide,sata,or esata drives?reason i ask is because the esata drives will confogure their settings automatically.secondly,what is the positionong on the motherboard that you have them configured at?also,have you tried making sure you have the drivers installed on the computer for the mand are they updated as well?go through device manager and verify everything is installed and up to date.gl with it.