P8Z68 raid issue

Hi folks.
I used a WD black caviar 1To with the followings partition: 1: Boot (Easy BCD)and swap, 2: Seven, 3: XP, 4: Linux, 5: programs, 6: DATAS with users and documents and settings on it.

Recently got 2X WD velociraptors 300Go (updated to last firmware 0.6), and wanted to try them in a RAID 0. (please do not comment security issue).

The 3 HDs are plugged in the Intel Sata3 ports.
Raid was created for the velociraptors (oh my god what a stupid and Martian interface, both for raid Intel and Asus bios !!!!)
Order of disks was set to 1 DVD, 2 Caviar, 3 RAID. in the Bios

Tried to boot with the Caviar: It begin to boot then reboot silent. No way.
The only way to boot again on my old disk was to reset from RAID to AHCI in BIOS.

Boot Ok, i can see the raid disk under Seven, XP, Linux.
RAID disk was partitioned and formated under Seven (boot, Seven, Programs, DATAS)
Copy of the Caviar volumes, (clone of Seven) on the RAID partitions.
Drive letters changed between RAID and Caviar for Programs and Datas.
Reboot on the seven Caviar: everything ok, Programs and DATAS partitions are well read on the Raid disk.
Now, i add an entry in EASY BCD for the RAID Seven system.

Reboot and try to boot on the RAID Seven: it begin to boot then black screen: "No or corrupted winlogon.exe" (or winload.exe, i don't remember).
Back to bios, reset to Raid, same blue screen than at the beginning.
Back to AHCI, i can only boot on the CAVIAR Seven
Please, help-me.