Hard restarts while gaming; struggling to diagnose.

johnnypebs

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May 28, 2016
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To start off with, this my PC:

  • OS: Windows 8.1
    CPU: Intel Core i5-4590 3.3GHz Quad-Core Processor
    Motherboard: Gigabyte GA-H97M-HD3 Micro ATX LGA1150 Motherboard
    Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1600 Memory
    Storage: Sandisk Ultra Plus 256GB 2.5" Solid State Drive
    Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
    Video Card: PNY GeForce GTX 970 4GB XLR8 Video Card
    Case: Phanteks Enthoo EVOLV MicroATX Mini Tower Case
    Power Supply: SeaSonic S12II 520W 80+ Bronze Certified ATX Power Supply

I have been having difficulty with the computer shutting off, then booting back up on its own for a few months. As I start to recall the symptoms, it seemed to start when my wife was playing Dragon Age: Inquisition. She would launch the game, the Bioware splash screen would come up and the computer would power off/restart. After updating the drivers via Nvidia Geforce Experience and using that to optimize the game settings, the problem seemed to go away. For a bit, anyway.

When it came back, I started having semi-reproducible issues in Fallout 4 (after 200-300 hours of gameplay with no issues). Every once in a while, during the lockpicking mini-game, when I would successfully pick a lock, the machine would restart. It started becoming more frequent and then started occurring outside of that minigame; it would sometimes occur during the load screen while fast traveling, when exiting an inventory of some sort (character's inventory or container inventories), and then after examining items (reading a note and then exiting out, for example). While trying to figure out what's causing this, my son told me that he has encountered this issue with Cities Skylines, while launching the game or loading a save. This does not occur outside of gaming; normal usage (web surfing, email, Word docs for homework, etc..) does not trigger the problem.

There are never any error messages. I've checked the Event Log and the only critical alerts I can seem to find show up after the restart and simply indicates Windows wasn't shut down properly. The source on this message is Kernel-Power, Event ID 41 and Task 63. I've checked both the minidump folder and livekernelreport folder, but neither of those contain anything. I've run full scans with Avast and Malwarebytes and found nothing. I ran a Windows memory diagnostic and it came back without error. I've installed MSI Afterburner to monitor temps and nothing has been out of the ordinary there: while playing the game, the hottest the GPU got was around 75c (when it restarted, GPU temp was 60c) and all CPU cores were in the mid 40s. CPU and GPU all sit in the mid 30s at idle. I installed OCCT and stress tested the CPU, GPU and PSU for 30 min each. CPU test was Linpack with 25% memory. GPU test was DX11, fullscreen, sc3. PSU test was at the defaults. All 3 ran fine with no restarts. I also tried the CPU and PSU tests at 1 hour with the same settings and upped the memory on the CPU to 90% and those also ran without causing a restart.

I've run chkdsk on both the SSD and HDD. When I originally built the machine, I had 8GB RAM (1 8GB stick) and suggestions on another forum indicated just having one stick on a dual channel motherboard, might be causing the issue. I ordered a new stick and first tried simply swapping them in the event that there was a memory issue that the diagnostics did not catch, but the problem persisted. I added both sticks in to increase the RAM to 16 GB (now knowing the original stick was good and since it was something I'd been planning anyway) and the problem persisted. I even tried reseating the GPU and the cables into it just in case it was some how not making a good connection, but I'm still having the problem.

I'm at the limits of my knowledge at this point and the issue is seriously frustrating. I'd appreciate any help in solving this, as it's made gaming on this computer (its primary purpose) nearly impossible.
 
Solution
After contacting PNY with warranty questions, and talking to their technical support, it ultimately turns out to be the power supply. The GTX 970 requires 42A at 12V and my original power supply put out 40A. According to almost all of the PSU calculators out there, my setup would only pull ~480W (NewEgg.com said 683W), so the 520W Seasonic appears to have been fine in that dept.



I replaced it with a 750W Corsair fully modular PSU that produces 62A on the 12V rail and I've been playing for a couple days with no issues at all.



Apparently, the reason that it wasn't restarting when running on the integrated graphics was because the power requirements are lower and the PSU could handle it.
It sounds like your VRM's on your Gigabyte motherboard are overheating. It doesn't even have heatsinks for the VRM's. You should get some Enzotech Forged Copper Heatsinks to place on your VRM's, and upgrade your case cooling to higher RPM fans.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835708011

Also, try run your GPU fan at 100% and then see if this error happens again. Your GPU might need new thermal paste (Arctic Silver 5).
 
Maybe, but I just looked at the reviews for your video card. The failure rates seem to be pretty high for the PNY card. Do you have another video card you can test? If not, try taking the card out, and run the integrated Intel graphics only to see if the errors still occur.
 


You might be surprised. Besides it's just temporary.
 


Okay, Fallout 4 loaded and auto adjusted to low, but the graphics were so FUBAR, I couldn't test anything. The integrated graphics simply couldn't render in any discernible manner.

One of the other games we had difficulty with was Dragon Age: Inquisition; that would force the restart immediately after the EA/Bioware splash screen. On integrated graphics, it loaded up to the main menu with no issue 5 or 10 times. I shut down, reinstalled the graphics card and the first time I tried to load it after booting up, it forced a restart. Looks like it's the graphics card.

I can't remember if I registered the card when I bought all the parts. If I did, it has a lifetime warranty and I should be ok. If I didn't, I'm going to have to see if PNY will work with me on this, since the problem actually surfaced prior to the 1 year warranty period ending and it just took me this long to isolate it.
 
After contacting PNY with warranty questions, and talking to their technical support, it ultimately turns out to be the power supply. The GTX 970 requires 42A at 12V and my original power supply put out 40A. According to almost all of the PSU calculators out there, my setup would only pull ~480W (NewEgg.com said 683W), so the 520W Seasonic appears to have been fine in that dept.



I replaced it with a 750W Corsair fully modular PSU that produces 62A on the 12V rail and I've been playing for a couple days with no issues at all.



Apparently, the reason that it wasn't restarting when running on the integrated graphics was because the power requirements are lower and the PSU could handle it.
 
Solution