[SOLVED] My PC turns itself off and restarts when under load.

[Ayaka]

Hello, I am somewhat new to PC gaming and don't know too much about the parts and stuff. I built my own PC from watching youtube videos a last year and have been plagued with the same problem ever since.

Specs:

2 Monitors | 1=4K 60hz, 2=1080P 144hz
i7-8700K
Asus Prime Z370-P
NH-U14S Noctua Cpu Cooler
32GB DDR4 3000Mhz
EVGA GTX 1080Ti
Samsung 500GB SSD
Kingston 128GB SSD
1TB HDD
850W Corsair RM850X

Basically my PC works perfect most of the time, super fast ect. Until I try to play a game like PUBG or get on VR. It's fine for a bit then my PC just dies. It blackscreens and reboots, it happens pretty consistently if im playing PUBG or VR. It used to do it when I opened up google chrome sometimes but that stopped for some reason. Since it started, I was told it was probably a faulty motherboard, so I bought a new one, the problem remained. Then I was told it's mostly likely a power supply issue, so I bought a new, better one. Again the problem wouldn't go away.
I went into bios and has a look around and seen my DRAM voltage was yellow I was using the XMP profile thing that made it go from ddr4-2133 to ddr4-3000 but the voltage was 1.3500 and yellow. I googled the problem found a post here saying updating their bios fixed the issue for them, nothing about PC dying like mine though. I took a chance and updated my bios. Then I set the thing in the bios to gaming/editing instead of normal, then went to run the EZ tuner fan speed setup automatic thing and when I clicked yes to start test, my PC died again and restarted. I went into bios and disabled the XMP profile for the ram and the voltage yellow thing went to automatic and white. I then exited and booted up pubg to test. Then my PC blue screened this time instead of just dying.

I have no idea what is wrong with my computer. I've had this problem for so long and no one seems to know whats wrong with it. In windows event viewer I get Kernel-Power errors Event ID 41 - saying "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly." This is what made me initially believe my PSU and motherboard was at fault. I'm starting to think it's either ram or gpu related. I don't think it's a temp issue either because I've monitored them before it all seems normal. My GPU got to around 71c before dying on pubg when I was monitoring it so I don't think it's overheating. My CPU is sitting around 36c min and 72c max right on 1 core now, with an average of like 60c across all cores. (I'm using core temp and msi afterburner to check this). This was after it died, I don't wanna load up pubg while im typing this out because it will die again. I've put up with the problem for over a year and it's getting to frequent to ignore now. This is a last ditch effort before I'm forced to spend a whole bunch of money either on repair shop or new parts again.

Oh and USB ports used to die on my old motherboard saying they didn't have enough power. It's happened maybe once on the new motherboard but isn't an issue.

I've tried:
Changing XMP profile in bios
Buying new motherboard
Buying new PSU
Updating Drivers inc gpu
Clean install of windows.
Changed boot device to different SSD
Unplugged everything but necessary stuff.
Switched around usb ports.

 

[Darkbreeze]

To begin with, don't it is my firm opinion that you should never use automatic performance enhancement settings in the BIOS or in Windows, that offers "automatic overclocking" or other enhancements except for setting the XMP profile or, with some Ryzen systems, the use of the PBO/PBO2 configurations.

Before going any further I would first do a hard reset of your BIOS settings and then go back into the BIOS and set the XMP profile again. Then save settings and exit. Whatever "yellow" you are seeing in regard to the memory voltage is based solely on the fact that you are outside the default JEDEC specifications for the memory voltage, which doesn't matter at all. 1.35v is perfectly fine for DDR4 and in fact you could go as high as 1.4, sometimes 1.45v, without any fear of problems whatsoever. 1.35v is THE standard voltage for almost all DDR4 that is faster than 2666mhz.


BIOS Hard Reset procedure

Power off the unit, switch the PSU off and unplug the PSU cord from either the wall or the power supply.

Remove the motherboard CMOS battery for five minutes. In some cases it may be necessary to remove the graphics card to access the CMOS battery.

During that five minutes, press the power button on the case for 30 seconds. After the five minutes is up, reinstall the CMOS battery making sure to insert it with the correct side up just as it came out.

If you had to remove the graphics card you can now reinstall it, but remember to reconnect your power cables if there were any attached to it as well as your display cable.

Now, plug the power supply cable back in, switch the PSU back on and power up the system. It should display the POST screen and the options to enter CMOS/BIOS setup. Enter the bios setup program and reconfigure the boot settings for either the Windows boot manager or for legacy systems, the drive your OS is installed on if necessary.

Save settings and exit. If the system will POST and boot then you can move forward from there including going back into the bios and configuring any other custom settings you may need to configure such as Memory XMP profile settings, custom fan profile settings or other specific settings you may have previously had configured that were wiped out by resetting the CMOS.

In some cases it may be necessary when you go into the BIOS after a reset, to load the Optimal default or Default values and then save settings, to actually get the hardware tables to reset in the boot manager.

It is probably also worth mentioning that for anything that might require an attempt to DO a hard reset in the first place, it is a GOOD IDEA to try a different type of display as many systems will not work properly for some reason with displayport configurations. It is worth trying HDMI if you are having no display or lack of visual ability to enter the BIOS, or no signal messages.


I would certainly do THAT ^^^^ first, and THEN, do a CLEAN install of your graphics drivers, before trying anything else to identify the problem.

How To - How to perform a CLEAN install of your video card drivers.

Updated 9-19-19 How to do a CLEAN install of your graphics card drivers using the Wagnard tools Display Driver Uninstaller A major issue on many systems is the presence of multiple graphics card drivers or drivers that have been incompletely uninstalled followed by the installation of...

forums.tomshardware.com

Once you do both of those things, then we can get down to the business of trying to figure out what exactly is wrong. I want to say, right off the bat, that this is likely a graphics card problem since it's unlikely that it could be a motherboard or power supply issue since this problem is almost certainly not going to follow the replacement of those items if they were the problem, but there are a few other things it could be aside from the graphics card.

I'm assuming that you have checked the pins on the motherboard to make sure there are none even lightly bent, on both boards? Did you buy the new motherboard new or used? What was the model of the old motherboard and which model is the new one?

The Z370-P is not a very capable board, and it's low quality compared to most other boards in the Z370 family, but I'd be surprised if JUST that were causing your problem. Cooling is another potential issue which you have mentioned in passing but not really gone into much. We will likely need to take a closer look at this before all is said and done.

 

[RememberThe5th]

What are your CPU voltages?
Disable Multicore enhacement.

 

[Valyn_]

Have you tested your RAM in any way? I'd suggest trying memtest86 and testing your sticks both together and individually. If you get errors of any kind from that test it means your RAM is defective.

I used to have issues with crashing all the time when I built my PC and it turned out my RAM was faulty. Maybe that's the case here too?

 

[Ayaka]

What are your CPU voltages?
Disable Multicore enhacement.

Disabling Multicore enhancement seems to have done the trick. Thank you so much!

 

[Darkbreeze]

Doing what I indicated to do to begin with, would have disabled the multicore enhancement, and any other changes you made, allowing you to start fresh and simply reset the XMP profile. Regardless, good to see you got it working properly.

 

[Ayaka]

Doing what I indicated to do to begin with, would have disabled the multicore enhancement, and any other changes you made, allowing you to start fresh and simply reset the XMP profile. Regardless, good to see you got it working properly.

I had no idea what a cmos battery was. I was working from the easiest options then through to the complex. I was hoping to not have to open the PC up. Thanks for help anyway!

 

[Darkbreeze]

Of course. Anytime at all.