How much stuff are you trying to connect? I checked, and your MOBO doesn't have the usual GB jMicron SATA ports - if your southbridge is working (and it has to be, for the one drive to work), all your SATAs should work - likely a bad drive or power cable - if you'll give me a run-down, I can suggest a testing procedure...
First thing to check is to make sure, for the time being, that you have AHCI disabled - set "OnChip SATA Type" on the "Integrated Peripherals" page of the BIOS to "Native IDE"...