This is the inherent problem with RAID, and why it's not redundancy. Sticking just one drive on your W10 machine shouldn't work because it should require the RAID partition which needs both drives and the controller if that card is hardware RAID. If the controller isn't a hardware RAID solution then putting both drives on your machine to do a software RAID might work. Sounds like the controller is what failed (twice) and not really the drives or the RAID. I ditched RAID years ago because of these kind of issues.