Question : Problem: RAID 0 Desconfiguration

Hello , my motherboard is a Asus P5WD2 Premium and i have mounted a RAID 0 in the ICH7R controller with 4 disk SATA 2 Hitachi Deskstar T7k250.
My S.O ist Ultimate 64 bits.

It have work  perfect during mounths but yesterday in the restart of the computer during the post appears a Raid window and say that i have 3 disks ok and one Non-Raid Disk , but in the bios post ( before this windows ) make a check of all disks and say that all four are OK.

In windows using the Intel Matrix Storage application say me the same , 3 disks in raid volume and 1 non raid disk.

How can i append mi separate disk another time in the RAID without loss any data ??

Answer : Problem: RAID 0 Desconfiguration

That's very unlikely to work, as every file will be scattered on all of the disks.