RAID failed status usually means, the structure and data are no longer available.
Since this is RAID 1, you can recreate RAID by resetting disks to Non RAID and use Intel(R) Matrix Storage Manager to modify the disk and convert them onto RAID 1.
Based on the picture Intel-Matrix-2.jpg you have missing drive, you could try right clicking the drive and check what options it will display.
If there is no option to recreate RAID from existing drive, you will need to Reset disk to Non RAID at BIOS level and recreate the structure.
Allan.