Question PC suddenly turning off while gaming ?

XLAAX

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Jan 7, 2014
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Hey,

So I've noticed since the past few days, my PC is suddenly turning off after playing fortnite for a little while. In a strange state too, all the fans and etc. stop inside the case and no signal display, but the power light around the power button stays on, pressing it again starts the booting sequence however.
Weirdly, I at least haven't seen the issue playing other games, and I did look into CPU OCing after this doing multiple stress tests for hours, and even with that I haven't seen my PC turn off, crashed windows at best.
Anyway, since then I've tried multiple things.. setting CPU back to stock settings, still crashed. Performed a RAM test, no issues. Performed a bunch of stress tests like Cinebench, OCCT, Prime95, no issues. Repair install for Windows 10.
I should mention while playing Fortnite, I haven't seen the CPU/GPU get over 80 degrees C, so not sure it's an overheating issue at least where they're concerned.
Only thing I'm wondering now is whether it's a PSU issue, but no real idea how to investigate that. Though it's a 1000W supply and my CPU/GPU were barely reaching 500W during Fortnite, but that is just a theory at this point.

Specs:
AMD Ryzen 5950x
H115i Platinum AIO
MSI 3090 Gaming X Trio
G.Skill 32GB (2x16) RAM
Corsair RM1000X PSU
X570 Aorus Master Motherboard
Coolermaster H500M case
Sabrent Rocket 2TB SSD PCIe 4.0 NVME SSD (Windows installation here)
2x Crucial 2TB MX500
1 3TB HDD

Would really appreciate any suggestions, info or advice here.

Thanks
 
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XLAAX

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OK so I didn't get a crash In fortnite yet, but I did run another OCCT power test for about 45 mins and same problem.
What should I look into next?
 

XLAAX

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As another update, took out PSU, made sure everything was connected, and also plugged it into the wall instead of extension lead as usual, same sudden shutdown during a power stress test on OCCT. I've ordered another PSU to test tomorrow and I'll update if it is.
Is there anything else I can do to try and diagnose it? I had HWINFO open and saving logs, but dont see anything of it reaching a certain high point as the last entry. Would be interested to know what is actually causing it to shutdown.
 

XLAAX

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As another update. I've also ran Karhu RAM Test and it found an error after 47mins, so potentially a RAM issue?
I don't see any logs as such, but going to get more RAM and see if it passes fine with that
 

XLAAX

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New update. Put RAM from another PC into my current one. Ran an OCCT memory test. No issue. Ran a OCCT power test, fine, Ran another power test, half way through shut down.
Not sure what to do now. I received the other PSU today, but not sure I want to unbox it and set it up if it isn't really the problem.
 

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