Startup Diagnostic Repair Loop After Nvidia Driver Update and Fresh In

Long story short: After a fresh windows install, whenever I try to use my GPU with a Nvidia driver (via GeForce or windows driver update), I get stuck in startup diagnostic loops.

Rig
CPU: i7 8770k
GPU: 980TI
Motherboard: Asus Z370-E
RAM: DDR4 2x16G
SSD: Samsung 840 Pro
PSU: Corsair GS 700
OS: Windows 10 64

Going to bed, my computer was working fine, no hardware or software updates to my knowledge. In the morning (04/06/2018) I booted up my PC and it went straight into diagnostic loops eventually leading to the blue restore and advanced options screen.
Reset a couple of times to no avail.

Troubleshooting:
- Initially, I did some googling following some youtube videos. In the end, I decided a full restore would be best. (Restore points, rollbacks and startup repairs didn't work).
- After the restore, I installed manufacturers drivers for the Z370. However, after installing Nvidia, drivers, the PC force reset and went back into diagnostic loops.

So..

* Note: all other drives, CD tray and USBs are disconnected
- I formatted and wiped the SSD
- Reinstalled Windows 10 from an external drive
*Note: Remove my Razer keyboard as a popup bugged the install
- Removed the 980TI in-turn to use integrated graphics.
- Updated windows, installed Nvidia driver via GeForce
- Mid install, Id get a force restart followed by diagnostic boot looping

Next.

- Installed drivers in safe mode successfully
- Manual restart out of safe mode lead to diagnostic boot looping

- Swapped out 980 ti for 970
- Repeated the same process with the same outcome.
- Tried older drivers around 388, same result.

So after a fresh install, whenever I try to use my GPU with a driver, I get stuck in diagnostic loops.
Integrated graphics is as stable I can get.

It's probably worth noting that I've had my board, CPU and memory for about 3 months
SSD about 4 years.

Any insight is much appreciated. Thanks.

Hello, thanks for your reply.
I used DDU in safe mode, disabling driver updates. Still same problem once the older driver was manually installed.
I also switched out my windows tools USB, tried one mem stick at a time and put the OS on another hard drive.
Is reseating just making sure everything is plugged correctly?
My GPU works when a driver isn't installed.

Caledon Ken said:

Yes reseating. Just want to make sure it was getting voltage it required.

Sorry what do you mean it works properly with no driver? Are you getting basic VGA?

Have you tried another slot?

Correct, VGA works until I install a driver normal mode, search for hardware changes within devices menu or safe install drivers with a reboot.

Tried another slot. Same issue.

I purchased a new motherboard and it works. Surprising as the one that failed was 3 months old. Any suggestions on the process of warranty returns?