this post was submitted on 21 May 2026
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PC Master Race

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PC randomly restarts out of nowhere (sh.itjust.works)
submitted 22 hours ago* (last edited 17 hours ago) by HerbalGamer@sh.itjust.works to c/pcmasterrace@lemmy.world
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As title suggests.
Coming home the other day I find my PC started to restart out of nowhere, with no warning before or errors afterwards. I haven't changed anything and haven't had this problem before.

Any suggestions on what to do?

Device specs:
Processor Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz 3.60 GHz
Installed RAM 64.0 GB
Storage 233 GB HDD ST9250315AS, 112 GB SSD OCZ-VERTEX2, 466 GB SSD Samsung SSD 970 EVO Plus 500GB
Graphics Card NVIDIA GeForce RTX 3060 (12 GB)
System Type 64-bit operating system, x64-based processor
OS Windows 10

UPDATE: Memtest got through 2 out of 4 passes in under 4 hours before I got fed up with waiting, which in itself seems a good sign since it didn't restart there.
Event viewer showed one odd Event: The process C:\WINDOWS\Explorer.EXE (ANDROID-17) has initiated the restart of computer ANDROID-17 on behalf of user ANDROID-17\smuld for the following reason: Anderer Grund (geplant) Reason Code: 0x80000000 Shut-down Type: restart Comment:

No idea why because automatic restart is disabled.

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[–] bridgeenjoyer@sh.itjust.works 4 points 20 hours ago* (last edited 20 hours ago) (1 children)

First check. PSU. They fail a lot since they are "always on"

Ive had this multiple times.

[–] HerbalGamer@sh.itjust.works 2 points 17 hours ago (1 children)

The only way of checking the PSU I've found was by basically shorting pin 16 and 17 on the 24 pin cable.. but does that check anything other than if it turns on? Other test suggestions?

[–] bridgeenjoyer@sh.itjust.works 4 points 17 hours ago* (last edited 17 hours ago)

Stress test your GPU and see if it crashes.

Then use somethibg line LACT to limit GPU wattage draw and see if that prevents crashing. Prime example of bad PSU if so