PC Refuses to Shutdown

[N64CUBE]

I’ve run into an issue I can’t wrap my head around. My PC woke itself up in the middle of the night, and powered itself on. All lights/fans seem to be running and I assume the system is as well. However, neither monitor is receiving any signal from the card.

This is the weirder part, the system won’t allow itself to be shut down. I cannot get into windows to do it through the OS, but even a force shutdown immediately reboots the system, leaving no window to quickly shut off the PSU.

 

I’m running Windows 10 64-bit with an FX-6300, 8GB DDR3, and a 980ti on an Asus M5A97. I’m powering it with with an EVGA 750w.

 

Any help would be appreciated.

[Skipple]

I would start wit BIOS settings for wake options. Also, windows updates can force wake a PC so I would check that too. 

[N64CUBE]

1 minute ago, Skipple said:

I would start wit BIOS settings for wake options. Also, windows updates can force wake a PC so I would check that too. 

I would do that but I’m unable to even access the BIOS, as nothing displays whatsoever. System was working normally about an hour ago, not likely that both display cords failed or came loose.

[Skipple]

1 minute ago, N64CUBE said:

I would do that but I’m unable to even access the BIOS, as nothing displays whatsoever. System was working normally about an hour ago, not likely that both display cords failed or came loose.

Oh! That is weird! Sorry for not understanding your problem fully first. 

 

Is the CPU fan running at full speed? That's an indication it's not POSTing at all. 

[N64CUBE]

Just now, Skipple said:

Oh! That is weird! Sorry for not understanding your problem fully first. 

 

Is the CPU fan running at full speed? That's an indication it's not POSTing at all. 

It’s okay, I’m very confused with this too haha

 

Yes, it sounds like it’s running full speed.

[PopsicleHustler]

Today your PC mysteriously turns on and refuses to turn off. Tomorrow "someone" gains access to nuclear codes.

 

 

Jokes aside, I had similar symptoms with my old FX8350 system. My PC gained consciousness and began turning on and off until it turned on without any display and I couldn't get a picture without changing the CPU.  

[Skipple]

Just now, N64CUBE said:

It’s okay, I’m very confused with this too haha

 

Yes, it sounds like it’s running full speed.

Start isolating parts. Remove GPU, anything in PCI slots, etc. and all but 1 RAM stick (in the correct DIMM slot) and see if it can POST. Your PC doesn't have integrated graphics but you can tell by the CPU Fan speed. 

[N64CUBE]

Just now, PopsicleHustler said:

Today your PC mysteriously turn on and refuses to turn off. Tomorrow "someone" gains access to nuclear codes.

 

 

Jokes aside, I had similar symptoms with my old FX8350 system. My PC gained consciousness and began turning on and off until it turned on without any display and I couldn't get a picture without changing the CPU.  

Lol, the AI is coming for us. Do you think it’s a case of chalking it up to the old FX mobo/chip failing and moving onto ryzen or an intel equivalent?

[N64CUBE]

3 minutes ago, Skipple said:

Start isolating parts. Remove GPU, anything in PCI slots, etc. and all but 1 RAM stick (in the correct DIMM slot) and see if it can POST. Your PC doesn't have integrated graphics but you can tell by the CPU Fan speed. 

That’s the other thing, I would go about starting that process, but I can’t even force shut down with the power button without it restarting immediately. I suppose I could just switch off the psu while it’s running, as all my important files aren’t on hard drives, but it seems risky.

[PopsicleHustler]

Just now, N64CUBE said:

Lol, the AI is coming for us. Do you think it’s a case of chalking it up to the old FX mobo/chip failing and moving onto ryzen or an intel equivalent?

You can't be sure until you check everything. I'm saying that my PC had similar behaviour when my FX CPU was dying.

 

But if you were thinking about upgrading, this is a good time.

[N64CUBE]

2 minutes ago, PopsicleHustler said:

You can't be sure until you check everything. I'm saying that my PC had similar behaviour when my FX CPU was dying.

 

But if you were thinking about upgrading, this is a good time.

As soon as I figure out how I can get this thing shut off without immediately powering itself back on I’ll begin the process of narrowing down the problem component. 

 

True, lots of sales coming up.

[Skipple]

4 minutes ago, N64CUBE said:

I suppose I could just switch off the psu while it’s running, as all my important files aren’t on hard drives, but it seems risky.

Nah, you will be fine. I force shut off my PC all the time when it is like that.

 

Your PC isn't booted into Windows right now from the sound of it. Even if it was 99% of the time you are okay to cut the power. 

 

Cut the power and try and turn it back on.

[N64CUBE]

Just now, Skipple said:

Nah, you will be fine. I force shut off my PC all the time when it is like that.

 

Your PC isn't booted into Windows right now from the sound of it. 

Yeah, you’re right, Windows is stored on an SSD anyway. I forced it off with the PSU switch, and switching it back on thankfully didn’t start it up again. I’ll try to get my hands on some spare parts in the next few weeks to do some testing. I’m gonna assume it’s either motherboard or PSU related because it doesn’t seem to be POSTING at all.

 

Very strange.

[Skipple]

1 minute ago, N64CUBE said:

Yeah, you’re right, Windows is stored on an SSD anyway. I forced it off with the PSU switch, and switching it back on thankfully didn’t start it up again. I’ll try to get my hands on some spare parts in the next few weeks to do some testing. I’m gonna assume it’s either motherboard or PSU related because it doesn’t seem to be POSTING at all.

 

Very strange.

Just try and start it right now without touching anything. It might boot right back up w/ no issue. If not, start that testing. 

[N64CUBE]

1 minute ago, Skipple said:

Just try and start it right now without touching anything. It might boot right back up w/ no issue. If not, start that testing. 

Well now that’s really strange, working just fine now, and I was gonna let it sit until the morning haha. I guess I had to go through a very roundabout power cycle for it to function normally.

 

Still, that’s a weird issue I don’t have a solid explanation for, good indication it’s time to upgrade soon I guess.

 

Thanks!

[Skipple]

Just now, N64CUBE said:

Well now that’s really strange, working just fine now, and I was gonna let it sit until the morning haha. I guess I had to go through a very roundabout power cycle for it to function normally.

 

Still, that’s a weird issue I don’t have a solid explanation for, good indication it’s time to upgrade soon I guess.

 

Thanks!

Honestly, if it doesn't happen again I wouldn't worry about it. Electricity can be a fickle thing. 

[N64CUBE]

1 minute ago, Skipple said:

Honestly, if it doesn't happen again I wouldn't worry about it. Electricity can be a fickle thing. 

You’re right, I’m just glad nothing was damaged.

[Skipple]

Just now, N64CUBE said:

You’re right, I’m just glad nothing was damaged.

good luck!

[N64CUBE]

4 minutes ago, Skipple said:

good luck!

Thanks for your help!

[191x7]

A bad power switch or reset switch?

[N64CUBE]

21 minutes ago, 191x7 said:

A bad power switch or reset switch?

Could have shorted, but all appears to be functioning well now. Probably gonna swap the motherboard/cpu/etc and the psu soon anyway.

[191x7]

2 hours ago, N64CUBE said:

Could have shorted, ...

It might have been stuck.