According to this
, there's an "additional Silicon Image Sil3114 Serial ATA controller on the K8N4-E Deluxe." If your SATA drive is connected to one of that controller's ports, then try the sata_sil driver. sata_nv may also be needed if you have e.g. an optical drive connected to the nForce SATA controller. So, select both just to be sure.