Random shutdowns, no bleepin' reasonFollow

Could it be overheating? I seem to recall my comp doing the same thing many years back and I think we traced it to a fan going out.

A power supply tester with the unit under load ($15 plus something you can plug into it and run independantly, prefferably a large water cooling pump or something along those lines will tell you if you are getting any drops or spikes, but basically the same data you can already get from uefi.

What make and model power supply are we talking about. SOme of the less desirable ones (OCZ, etc.) have really really crappy capacitors that can start to fail after a year or two. Most of the solid good ones should last at least 3 on the low side though. An enermax will last you forever.

A full system halt without a memory write or a bluescreen or a cache dump or anything is almost always power, and is almost always either the power supply, the motherboard itself, or the video card. If you have a spare, prefferably low end and not requiring alternate power video card you can put in for a day or two and see if you can get it to repeat the issue, that will eliminate the video card as a suspect. Also, you said 850 watt, which should be fine assuming its a decent brand, but just to check, how many hard drives (speeds, types SSD or no) and optical drives do you have plugged into this thing? Any chance you have 6 or 7 drives and a few accessory cards plugged into it?

So I just ran a video RAM test at the suggestion of a friend and it coughed up 34 errors on my brand new GTX 770. Gonna be RMAing this I think.

I know it's not dust because as part of the process of installing the card, I gave the entire system a good dust out. I've got Speedfan and Realtemp running and the card never goes above 70C under load. CPU is a relatively frosty 45C most of the time.

Oh, those adaptor things are absolute crap. They kill video cards. Your existing card has almost certanly been damaged by them. I wish they wouldn't even include them in the box as an option because they generate so much extra heat on those two split off links. Buy a new power supply before you put the RMA card back in.

+1 modular PSU. Those things are the best invention ever!

UPDATE: Well, I switched the wires as a last ditch effort and XIV ran overnight without a crash., The system also stopped making random "bzzzt!" sounds with static on the monitors as well.

I'll be damned. It really may have been a bad PCIe 12V tentacle.

UPDATEGA: Hahaha nope. Flipped out on me in the middle of Crystal Tower, and then to add insult to injury I got kicked out by the system since it happened to me the second I returned to start.

Going to get a new PSU after all. And if it's still flipping out, I have a strong case for RMA to MSI.

Edited, Mar 30th 2014 11:33am by Catwho

Coolermaster makes a good PSU. Like Kao said Enermax is probably the best, but it was more than I wanted to spend so he suggested Coolmax and it's been a pretty good PSU. I was always a Thermaltake guy, but I've just gone through too many of them to continue purchasing them.

Ordered and on the way! I'm impatient, I told them to get it here by Tuesday. Monday is XI day so overnight it would be silly.

If this goes splort even after the new PSU, then I can legitimately say to MIS that "yes, I tried a different PSU" and "yes, I tried a different video card in the motherboard and it worked fine" (since the motherboard was working great with the Radeon 7770.)