Borked my PC when trying to split up a RAID 1 array (not windows disk)

I have two 1TB disk drives as storage space. Originally, I set these up as a RAID 1 array, but am now using this PC for DVR purposes and not so much for actual work, so the disk space is more valuable than the redundancy. So I wanted to undo the RAID, but the RAID is not my boot disk, so I figure it would be a piece of cake. I backed everything important up onto an external USB drive and got to work.

I originally created the RAID array using the Intel Rapid Storage Storage Technology software, so I figured that was a good place to start. However, at this point the software wont open. I tried uninstalling it, but when I try to reinstall, I get an error about not working in this 'environment'. After a bit of unsuccessful troubleshooting, I decide to skip on the Intel software and work with the windows Computer Management / Disk Management bit.

In there I find both physical disks listed, but one is inactive indicating that there's a "device signature conflict". I used the command-line fixer thing to bring the disk back online, so now Windows sees two independent drives. So far, so good.

When I start moving things around, I get a BSOD within 5 minutes, and it keeps happening.
All I can see on the BSOD screen is "QL not less or equal..." But it is appears to be somewhat cut off by the tv/monitor.

So I figure maybe that DVR-destined drive went bad since that was the one under heavy load when the BSOD started, and I remove it from the system. Everything is fine for a bit, but then another BSOD with same error details. I google the details and see it commonly blamed on driver problems. So I go in and uninstall the Intel Sata AHCI controller, as recommended online. However, I often get a "windows update on next reboot" notice, and after a reboot I am back to the Intel AHCI controller.

That works for a bit, but another BSOD does show up later that night.

So now I have removed BOTH 1TB drives from the system and am running some stress tests (mainly watching TV through an OTA antenna) which, so far, have not led to a BSOD.

My next thought is to do a fresh install upgrade to Win 10 (not carrying over programs and settings). Hopefully that will use all new drivers and then I can put the two 1TB drives back in the system, working independently.

Would that work? Is a good idea? Any better ideas?

Update:
On the recommendation of others, I have reinstalled the two 1TB drives, but on different ports in the MOBO. I browsed bios a bit to see if there is any reference to RAID, but there is none. All disk drives are reading as AHCI.

So, for now, all is well. Anyone know what those BSOD logs are saying?