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PC randomly restarts out of nowhere
(sh.itjust.works)
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this post was submitted on 21 May 2026
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Usually a memory fault results in random blue screens on most crashes, not in a consistent pattern of going dark and booting again. Still, it could be memory, and it doesn't hurt to try it.
That's a fair comment, but there's a secondary reason I suggested it, eliminating the OS as a potential cause. If it still crashes while booted into memtest86, it's much more likely to be a hardware fault, on the other hand, if it stays running overnight, it's more likely to be software.
Well it ran fine for 2/4 passes in under 4 hours before I got fed up with waiting and canceled the rest to do it tomorrow while I'm gone so that seems promising!
Good point.
I believe the default behavior is to crash dump and restart on BSOD. Holding on BSOD display must be configured.
Usually shows on the screen for at least a moment, but yeah, if it writes the crash dump fast enough you might not see it.