PC randomly shuting down

[Miiep]

Hi everybody.

After running smoothly for 6 month as a gaming setup my PC started to shut down randomly, no matter what I'm doing, even if there is nothing open.

My specs:
MB: LiveMixer B650 (BIOS 3.08)

CPU: AMD Ryzen 5 7600 6-Core

PSU: Seasonic SSR-750FX³

RAM: Vengeance DDR5 32 GB (in 2 slots)

Memory: Samsung SSD 990 Evo 2TB

OS: Windows 10 Home 64 bit Version 22H2

 

First I checked if I was running into issues during to heat, but that's not the case, see the Screenshot below, which was taken around 10 sec before a shutdown.

I also checked if all cables are ok, if there is enough thermal paste at the CPU (even though I hadn't trouble with overheating).

Sometimes the PC crashes within a few seconds of running and sometimes it runs normally for up to 3 hours, before it crashes.
I also ran antivirus and antimalware software and they didn't find anything as well.

The Memory was checked by the Samsung Mafician and it said, that everything is fine.

I remounted everything, except for othe MB and tested with only 1 of 2 RAM and in the other two slots.

If you need more information or if I posted this at the wrong place, please let me know

I'll also include a picture of the running PC.

 

Greetings and thanks in advance

[Likwid]

A friend of mine had a faulty case power button that would randomly turn off the pc.

[Blasty Blosty]

Could be a faulty PSU

 

Try a different wall outlet

[Miiep]

30 minutes ago, Blasty Blosty said:

Could be a faulty PSU

 

Try a different wall outlet

Thanks I tried changing the wall outlet. A change of the PSU I didn't do, because it's a new ad everything else

But I'll try it thanks

41 minutes ago, Likwid said:

A friend of mine had a faulty case power button that would randomly turn off the pc.

Any idea how to check that, without getting a new case? 

[Likwid]

24 minutes ago, Miiep said:

Thanks I tried changing the wall outlet. A change of the PSU I didn't do, because it's a new ad everything else

But I'll try it thanks

Any idea how to check that, without getting a new case? 

Turn on pc, and disconnect power button connector on motherboard.

Can you also check logs of event viewer, it should show why pc crashed or shut down last time

[Blasty Blosty]

57 minutes ago, Miiep said:

Any idea how to check that, without getting a new case? 

Disconnect front panel IO, then short (connect) the power pins with a screwdriver or other metal object

[Miiep]

On 12/12/2024 at 12:27 PM, Likwid said:

Turn on pc, and disconnect power button connector on motherboard.

Can you also check logs of event viewer, it should show why pc crashed or shut down last time

Thanks very much, due to work I was only today able to do a proper test. The PC is running for 6 hours now with no problems
Now I only have to think about how I can fix that issue
But because I still have warranty I'll ask the case manufacturer first
I looked into the event viewer it didn't show any reason as to why the last shutdown happend, as far as I can tell (used it for the first time today)

Thank you all for your help.