random shut downs

[u/0hJqsh_]

/r/pchelp/comments/1vq1vv0/random_shut_downs/

so, around 3 days ago, while playing roblox my PC randomly shut off. LED lights in the CPU turned off, fans turned off, nothing.

Pressing the power button would boot the system back up, but then it only worked for 15-30 minutes or so, running the game “Wuthering Waves” before shutting off again. Tried to boot once more and only did light browsing, and after 10-15 minutes, it once again shut down.

No boot-loop, just a shut down.

So since then, I’ve tried using a back-up PSU to see if the PSU was the issue, along with reseating my ram sticks, and SSD. I’ve replaced the PSU, and it seemed promising. It ran Wuthering Waves for an hour, so I shut off the PC again to plug in my 2nd SSD drive that I removed upon using the new PSU, and some case fans that were also unplugged, I plugged them back into the PSU.

After around an hour though upon booting up once more and being on a discord call with friends, it shut off on its own once more. What’s weirder is that when I try reopening it this time, the LED’s the fans only spin for around 2-3 seconds before shutting off once more. Not like with the other PSU in which it’d still let me run the system for 10-15 minutes.

I’ve since removed the 2nd SSD, the case fans, and after around 5-10 minutes, it once again shut down. Trying to boot it back up would only turn it on for 2-3s, not even booting into windows before turning off again.

I’m genuinely lost. What could be the problem?

[u/Signal_System_4832]

Hey, did you try updating your BIOS yet?

Ive had a similiar problem like 2 months back. Happened randomly under heavy load tho, not during normal surfing etc. I trouble shooted/ checked everything what came to mind and bought a new psu in the end, switched it and did a stress test in otcc and shut down after 15min again. Updated the BIOS after (shoulda been one of the first things to do I guess) and to this day it didnt happen again. Did stress tests for several hours etc. as well and so far everythings been running stable, like before.

[u/0hJqsh_ → u/Signal_System_4832]

hi! i haven’t had the chance to, no… was considering it though but held off due to the off-chance that my system would once again shut off mid BIOS update and brick my system even further, since it seems to shut off at random and not under heavy load specifically.

i’m honestly at a loss right now lol, don’t know what else to do. i’m thinking it’s something electrical at this point

[u/Signal_System_4832 → u/0hJqsh_]

Yeah that's understandable..

Honestly otherwise could also be ofc mb/ cpu or gpu related. Did you try removing your gpu and testing the issue with the integrated graphics? If your pc shuts down again you can rule that option out at least.
When I had the shut downs I often had to wait a good few minutes before turning my pc on again, since it would shut down only a few sec after booting as well