Computer shuts down randomly and power button doesn't work

My computer shuts down randomly, after which the power button doesn't work. In order for me to turn it back on, I have to turn off the PSU and then back on. Then the button works. Any ideas why it would do this?

I assumed there might be a short, causing a button press, but why would the button require a PSU reset to work again? Is there some safety feature that prevents the button from working if it is pressed for too long?

Computer Specs:
Windows 10, 21H1
Motherboard: ASUS X570-P
Processor: Ryzen 5 3600X
Case: NXZT H510

dalchina said:

The power button's function is interpreted by the BIOS and by circuitry in the PC. It's not as simple as switching a light on and off.

So is there a way I can log if a "power off" command was received by the BIOS? Are these event logged somewhere? Based on what you've posted, if there is such a log, and it is registering an "Off" event, then it is the MOBO and not the PSU. If there is no event, it is likely the PSU.

- - - Updated - - -

Think I found it actually...

-

System

- Provider [ Name] EventLog

- EventID 6008 [ Qualifiers] 32768

Version 0

Level 2

Task 0

Opcode 0

Keywords 0x80000000000000

- TimeCreated [ SystemTime] 2021-10-08T16:58:39.1411008Z

EventRecordID 101414

Correlation

- Execution [ ProcessID] 0 [ ThreadID] 0

Channel System

Computer Ula-ai-hawane

Security

-

EventData

12:18:22 PM

‎10/‎8/‎2021

18

E5070A00050008000C00120016007902E5070A000500080010001200160079023C0000003C00000000000000000000000000 0000000000000000000000000000

---

Binary data:

In Words
0000: 000A07E5 00080005 0012000C 02790016
0010: 000A07E5 00080005 00120010 02790016
0020: 0000003C 0000003C 00000000 00000000
0030: 00000000 00000000 00000000 00000000

In Bytes
0000: E5 07 0A 00 05 00 08 00 å.......
0008: 0C 00 12 00 16 00 79 02 ......y.
0010: E5 07 0A 00 05 00 08 00 å.......
0018: 10 00 12 00 16 00 79 02 ......y.
0020: 3C 00 00 00 3C 00 00 00 <...<...
0028: 00 00 00 00 00 00 00 00 ........
0030: 00 00 00 00 00 00 00 00 ........
0038: 00 00 00 00 00 00 00 00 ........

And this one...

-

System

- Provider [ Name] Microsoft-Windows-Kernel-Power [ Guid] {331c3b3a-2005-44c2-ac5e-77220c37d6b4}

EventID 41

Version 8

Level 1

Task 63

Opcode 0

Keywords 0x8000400000000002

- TimeCreated [ SystemTime] 2021-10-08T16:58:13.8793359Z

EventRecordID 101464

Correlation

- Execution [ ProcessID] 4 [ ThreadID] 8

Channel System

Computer Ula-ai-hawane

- Security [ UserID] S-1-5-18

-

EventData

BugcheckCode

0

BugcheckParameter1

0x0

BugcheckParameter2

0x0

BugcheckParameter3

0x0

BugcheckParameter4

0x0

SleepInProgress

0

PowerButtonTimestamp

0

BootAppStatus

0

Checkpoint

0

ConnectedStandbyInProgress

false

SystemSleepTransitionsToOn

0

CsEntryScenarioInstanceId

0

BugcheckInfoFromEFI

false

CheckpointStatus

0

CsEntryScenarioInstanceIdV2

0

LongPowerButtonPressDetected

false

dalchina said:

Does it shut down gracefully, or suddenly 'BANG' off?

There are event id's that may give data on the shut down - a reason- but not if it's sudden and catastrophic (the processor doesn't have the time to write anything).
Read Shutdown Logs in Event Viewer in Windows

Deciding whether it's the PSU or the mobo really requires either technical monitoring (if you're lucky enough to look at the right thing and it's fairly straghtforward) or substitution with a known good item.

Just Bang off, but the PSU hasn't switched off. It is registering a critical error though (see above).

Hi,

This event leaves you with under Powered alimentation, over heating and what was the computer doing when it happens, as the most cost effective troubleshooting startup point.

dalchina said:

Hopefully you're not overclocking, and you've checked there's no overheating issue?
Also confirm you've made no hardware changes that could be related.

I can confirm that there were no hardware changes and there never has been any overclocking. I have AMD Ryzen Master running, which gives me the CPU temp, and it was normal all day.

Funny thing is that it hasn't done it all day. This morning, it was every 5 minutes or so. Last night the same. The only thing I did this morning that could be anything of consequence would be removing the plugs from the motherboard controlling the reset/pwr/leds/etc. I had them off and it still did it, then I plugged them back in. Since then nothing.

Maybe there was conductive dust or something on the pins? I will have to wait and see.

It is worth noting that I am using a UPS. I notice that several other accessories that are also attached to the UPS do not shut off when the problem occurs, and the PSU stays on. So I am ruling this out as a problem at the moment, but I will probably try bypassing it if it continues.


Question: Would a 6008 be caused by long pressing the power button? Wouldn't a 41 always follow a 6008?