BSOD on Windows 10 with various errors at random times

I've been through the ringer on this one.

For over a year my comp was running fine and then a little over ten days ago it BSOD and would not boot or even allow me to repair. I reinstalled Windows and starting getting random BSODs.

I then performed about two days of diagnosing and narrowed it down to Marvell controllers on the motherboard. Disabled those in the BIOS and things were fine for about two days. Then the entire board refused to even post. In fact, the board LEDs no longer illuminated and the onboard power button just pulsed green.

Tried a new PSU with no luck. EVGA RMA'd the board. I tested out of the case and it posted fine. Re-assembled into the case and once again got a dead board with pulsing green power button. Stripped it down in the case with no fix. Then unplugged the keyboard and tried a different one, like magic it posted.

Reinstalled Windows and everything was going well. Even played a game. I seriously thought I was in the clear and then after about 24 hours I have been getting BSODs non-stop. I thought maybe it was my keyboard again and tried uninstalling the drivers. No luck.

Reinstalled Windows and started getting BSODs immediately after. Blue Screen View is showing it always failing at ntoskrnl.

I've run memtest86 with the default 4 pass test and zero errors. I've run the intel CPU diagnostic tools with no errors. At this point I can really use some help and direction. I've never had so much trouble as this before.

Updated system specs

Ran MemTest86 default settings/test.. which was about 5 hours. 4 passes no errors
Ran Intel CPU diagnostics tool with no errors

The rest have been somewhat brute force. Removing components (like removing all of the GPUs, not using RAID, etc...) and trying things. Also, updating drivers.. trying EVGAs motherboard drivers vs. Windows update etc... All with mixed results.

Last night I tried 3DMark and it wouldn't load assets.. though on this attempt of Windows install, I only used the Windows Update NVidia drivers figuring they'd be safest. What appears odd is after Windows update, I could see the full Nvidia control panel allowing me to set SLI. Now I do not, and I see a nearly empty control panel. That seems like something bad. So tonight I plan on using 3D guru tool to remove gpu drivers and installing the latest from NVidia and re-running 3D Mark.

However, the last time I did that on a previous clean install of Windows with latest from Nvidia, I was getting nv-------- driver IRQL and other BSODs. This was regardless of SLI or non-SLI and switching out, using only one GPU. My Corsair keyboard was also acting wonky and I assumed that it was Corsair's fault. There are reports of Corsair's drivers and CUE system being incompatible with NVidia drivers.

So I switched to an old Logitech keyboard. This keyboard is stable until after few Windows updates, then it starts to stutter. The mouse stutters and the keyboard stutters until a BSOD. Reattached my Corsair keyboard and mouse.. Windows update pulls their drivers and things smooth out. Not sure if it is smoothing out because it is just better hardware or something else.

So brute force is not helping me out here cause it seems like an interrelated sequence of things. Basically I know enough to be dangerous, but not enough to figure this out. I'm totally willing to step through whatever you direct me to do.

The GPUs are presently installed. There are three HDDs... Two WD Blacks in a RAID with no partition and one WD Black standard. I'll see what I can do about a keyboard tonight. Can definitely get one by tomorrow evening.

Ran MemTest86 with 8 passes and zero errors.