Cannot restore Degraded RAID Drive ECS GEFORCE611sm-m

I am using Vista 32 bit, with 2GB 800mZh memory and 2 500gb Maxtor SATA drives. The motherboard is ECS GeForce 611sm-m version 1 with GeForce 6100 chip.

The raid drives at POST show “degraded”. So I go into BIOS hit F10 for the nVidia utility and select the degraded drive, hit C to clear data and then R to rebuild and then Ctl X to exit. The drive does not rebuild. Any ideas?

Is it possible to rebuld from within VISTA? Thanks.