The raid probably isn't broken per sae; it is probably a case of the configuration in the bios not being right. update the bios again, then set drives to raid.. Asus support center helps you to downloads drivers, manuals, firmware, software; find faq and troubleshooting. Updating bios is advisable in the instance of new features (like support for new cpus and unlocking cpus) or fixed features (often, this is raid). step-by-step guide to updating bios on an asus.
Used the asus update tool to update the bios as well. everything works great until i go back into the bios and set the sata configuration to raid. then it still hangs just after the memory and usb. So i updated my asus maximus 6 gene from bios 1505 to 1603, took note of all my bios settings, did the bios update and set everything back to the same settings. (uefi & raid) yet the raid still reports as failed with 2 of the 3 disks no longer being part of the volume.. The new asus efi bios is an extensible firmware interface that complies with uefi architecture, offering a user-friendly interface that goes beyond traditional keyboard-only bios controls to enable more flexible and convenient mouse input..