So, brief background - I owned a custom boutique PC business back in 2007-2012. We went under after the margins changed with Maxwell - Was a life lesson in business and how NVIDIA operates. These are all brand new parts that were sitting in a prebuilt in storage for 8y. Took them out in December 2020.

Anyway, due to the software we have to run and the fact I game to relax -> I just purchased a 1080 TI from hardware swap 3 weeks ago and had some brand new parts lying around.

I'm having some hard shutdown issues and I can't figure out what's wrong.

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Parts:

Binned 3930k capable of 5.5 ghz - Currently sitting at stock.

Asus Rampage IV Extreme 2011 - NO OC.

Corsair Dominator Platinum DDR4 - NO OC.

Corsair AX1200i PSU - Tests within spec every time.

EVGA Founders' edition 1080 TI -> 1x 3840x2160

EVGA 750 TI -> 2 Monitors

Dual loop - Pump -> CPU -> MB -> 2xRad -> GPU - 3xRad - Res

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So what's happening and what have I done thus far?

After a long day of work, I relax with @ 2 hours of Warframe. Not a demanding game by any means, run it in the 3k range, not 4k.

At first, while running warframe, the entire computer would randomly shut down. Then it got worse, while browsing or, youtube...Or, even going onto screen 2 or 3...I was getting OV errors and surge errors. -> I used a voltimiter, found the PSU to be WELL within spec...Rampage 4's are infamous for the sensors dying - Okay - Turned them all to ignore and turned off OVP.

I've never been able to run Netflix Warframe at the same time...Which, this should be beyond capable of...It crashes out - Sound would start to stutter and then it just died...

I have a feeling, there's a logic error with Displayfusion and windows just doesn't report it so, I've been debating uninstalling it, but it's currently installed.

OVP being off worked for a little while - Then, The next day, the 750 TI artifacted BADLY - Kicked out it's 2 monitors in green artifacts...Okay - Removed the card.

At this point, I tested the Ram - It's perfect, 0 errors. I tested the PSU again, well within spec. I tested the CPU, perfect.

It's at this point I checked the loop - DEFINITELY had an air bubble - Even so, everything is set to shutoff at 90c. Motherboard always sits at 84c on the south bridge - Again, I think it's a bad sensor, but my point is that it's not overheating.

So, now I'm in single monitor, ran 3DMark to bench the PC and we have another shutoff. Complete reboot. No windows error.

All parts are effectively new - Never seen use...I don't want to believe it's the GPU - It's not artifacting, but I really can't figure it out.

I'm not opposed to buying a new motherboard or figuring out the GPU issue - The gentleman gave me a 90 day 'guarantee'...But this is stumping me and I really don't have time these days to chase the rabbit.

Any thoughts would be greatly appreciated.

Thank you