Very odd issue with my asrock z77 extreme 4 motherboard.

Jman2791

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Apr 16, 2013
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10,510
Specs:

CPU: i7 3770 w/ H60 watercooler
MB: ASrock extreme 4 z77
RAM: 16gb GSKILL memory @ 1600MHz
Graphics: Asus Strix GTX 970 SLI
SSD: 250 GB Samsung 840 evo
HDD: 2 TB Western Digital Green HDD
PSU: 1000w Rosewill
Case: Anidees A17
OS:Windows 10


Mind you a run a PC shop and never have trouble fixing others PC's. But the issue I'm having with mine is so odd and I cant figure it out for the life of me.

So occasionally when booting up the PC, it will stick to a black screen, no MB information or anything pops up. It requires me either hard booting the PC back down or hitting the reset button like 5 - 6 times.

Once loaded into windows it can go anywhere from 10 mins to a good few hours, but eventually hard locks up. Cursor doesn't move, keyboard doesn't respond. And it requires a hard boot.

Also, sometimes when shutting the PC down, windows will shutdown, but the rest of the PC stays running (fans, lights, keyboard, mouse)

Things I've done:

-Ran memtest for 12 hours: passed 6 times
-Ran MHDD on my 2TB HDD, passed with flying colors (I also tested my 2tb black edition HDD I had laying around incase it was an ssd issue)
-Ran GPU stress test using furmark at 1080p extreme burn in. Went all night no issues on my other PC
-Ran prime 95, again no issues.
-Turned off all hibernation and sleep settings on the motherboard
-no overclocks on on
-Temps on my GPU and CPU are very low and at a good number
-have tried a 750w evga Bronze PSU, still the same issues

Leading me to think either one of the GPU's or motherboard is going bad. Considering it passed a furmark I'm leaning more towards the motherboard.

Any other tips that could be causing this? The PC has been on for roughly 45 mins now with no issues. Long enough for me to read a few articles and post this up.
 
Do you try update all the drivers, or even the BIOS yet?
Go into the BIOS to check the voltage like cpu, 3.3V, 5V, 12V.
And maybe go into the windows event log to check there are any error too. May find something else.
Or run the PC with the onboard iGPU to see you get the same issue or not.
Also if you have other add-on device, disable them.
One more to try disable the antivirus software to test again, but don't forget turn it back on after you done the test.
 

Jman2791

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Apr 16, 2013
3
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10,510


BIOS: Most up to date one on the website
The voltages seem fine from what I can see.

Update: SO I've taken everything out, wired it a little nicer, and have only my KB/M hooked up to the PC.

I played xcom two for about 2 hours and then I went to eat dinner, came back and my PC was off. Checked windows error logs, and the only thing it said was windows has shut down unexpectedly. No blue screen or error codes though=[
 

Jman2791

Honorable
Apr 16, 2013
3
0
10,510


SO I ran stress tests while using HWinfo and speedfan. Both are reading my +12v rail around 11.3-11.5 volts> is this the issue?