RAID is an interesting thing, but through your descriptions, I do not know what kind of RAID mode (JBOD, RAID-0, RAID-1, RAID-5 or something else) you had configured before. You said there is only one drive at this moment, but how many drives were used to set up this RAID when you working under Windows 7 through 10 normally? I have no ideas why you borrowed two failed raid disks on another system (another computer? another operating system on the same RAID?), if you had three disks setting up for RAID-5, then only one disk remained, I would make sure that your system could not be restored, there is no biz with RST driver. If in your RAID configuration, there was only one drive, you might change it back to legacy IDE mode, and have a try!