I reread your original post and I still can't figure out why you recreated the RAID in Windows. It's normal for Intel Matrix to no longer see the RAID because you broke it when you converted it to a Windows RAID. You don't have to redo the RAID in the BIOS. If you haven't already done it, download and install Intel Rapid Storage Technology and use it to recreate and monitor the RAID 0. That tool also provides a lot of valuable info such as disk model, serial number, sector size, etc.