No Power On, What Should I Check?

wolfie138 · 6 Oct 2020 at 14:17

Been having issues w/ one of my builds, random - VERY random - power-off. been through all sorts of stuff to track it down but i think it's hardware ~ will power off for no reason then restart, no BSODs or unusual events etc.
Today it powered off twice over an hour or so, same story - Event 41, nothing else, no unusual values in the HWInfo log. But now, the machine won't power on. Doesn't respond to to case button at all. there's a mobo light on and the LEDs on the GTC980, so the PSU isn't totally dead. mobo has a power-on button, no effect.

Win10
ASUS Z-9a mobo
Devil's Canyon i7
Corsair RM750

TIA

EDIT: so that's odd. typed this up, hunted around for the mobo manual, did a couple bits and pieces, went back in the puter room and it's powered up and running :-/
just turned it off again, no point it getting it annoyed.

mickyflinn · 6 Oct 2020 at 14:32

Try clearing the cmos .

Have you tried any of the advice listed here ?

https://www.google.co.uk/amp/s/www.drivereasy.com/knowledge/computer-shuts-down-randomly-solved/amp/

wolfie138 · 6 Oct 2020 at 14:55

haven't tried CMOS, but most of the other stuff in that article. not sure the CMOS is an issue either, because of the very random nature - build was about a year old when it first happened, if i recall, did it once, then a few days later, then not for another many months. that pattern repeated for a year or two, then it just stopped happening and only resurfaced when i went from WIn7 to Win10, and again there was no rhyme, reason or pattern. i'm kinda convinced it's the mobo, gonna start a new thread for a replacement spec, but any other advice/ideas in the meantime would be welcomed.

mickyflinn · 6 Oct 2020 at 15:03

Makes sure everything is set to default no overclocking.

Long shot but mite be worth testing your ram with memtest.

Could be the motherboard but mite be the psu such random power offs it's difficult.

Have done any stress testing ?

wolfie138 · 6 Oct 2020 at 16:40

no overclocking stuff, i'm not into that. haven't done stress testing, i don't believe in stressing the machine like that. the power-offs were all occurring when the system was under negligible load so it didn't seem worth it.
i've run HWInfo logs multiple times for long periods and there seems to be no errant values/fluctuations.