server HP Prolaint ML 370 G4 RAID down / OS / data lost

[AllWeLearn]

hard 3 x 72GB disks are RAID one of them is down and damaged, i bring new one and replace the damaged
OS windows server 2003 is down can't boot with error (there is no disks)
i got the smart CD and access to discover RAID config.
i founded its 137 GB as logical drive but when tried to access using live CD this 137 GB are free with no data ?
i bring some free software and tried to scan disk to get data it's segmented to parts and seems to be corrupted?

i'm not sure that RAID already rebuilder and become health, i tried to access and test controller it's OK with no errors right now?
but during starting server on the screen this warning "error 1785 slot 4 drive array not configured"

advice please it's urgent,
Thanks on advance,