In the BIOS setting SATA Configuration Mode was accidentally changed from RAID to AHCI. Right after reboot but before login, Windows 10 Action Center appeared. I let it troubleshoot and repair but I don't know what it fixed. After login Windows 10 doesn't recognize the data drive (two disks Raid 0) I changed the SATA mode back to RAID in the BIOS. I still cannot access Intel Rapid Storage Technology Utility by hitting Ctrl-I. My device manager shows that Storage controller uses Microsoft Storage Spaces Controller. My two disks have not been reset or initialized in Windows 10. I am not sure how to recover in a right way. I have troubles to reinstall Intel Rapid Storage Technology RAID Driver and Matrix Storage Manager. I downloaded and ran RAID Recovery and RAID Reconstructor to retrieve information successfully but have not pay for it to complete the recovery process. I am not sure if it will work or not. Motherboard is ASUS Maximus V Gene and a technician doesn't know how to get the Intel RST screen back by Crtl-I. I verified that SATA Mode is RAID. The chip is Intel Xeon CPU E3-1230 V2. My PC has 3 disks, SSD as a primary and bootable drive C: and the two 1TB disks as one drive F:. Ctrl-I worked before.
Thanks in advance.
Once the computer changed to AHCI and rebooted, Windows made changes in the registry. At this stage, you need to reinstall the operating system, recreate the existing RAID volume and start again.
Intel does not provide registry fixes or modifications.