PC shutting off

thebennyboy · 13 Feb 2015 at 19:21

As the title says my PC keep on randomly shutting off and powering itself back on. It does not blue screen and literally just powers itself off, the only thing that i can see when it happens is a red LED comes on on the motherboard about .5 seconds before it shuts off. This has happened both under load and idle.

The event log only shows that the PC forcibly powered off. I have checked the following:

Fan connections
Memory seating
Heatsink seating
GPU seating
Temperatures

Anything i've missed? It's still doing it. Any ideas?

CinderzFTW · 13 Feb 2015 at 19:24

Erm, try setting bios back to defaults and run it on stock for a while... could be a dodgy overclock, doubt it, but worth a try

thebennyboy · 13 Feb 2015 at 19:28

CinderzFTW said:
Erm, try setting bios back to defaults and run it on stock for a while... could be a dodgy overclock, doubt it, but worth a try

Could an unstable northbridge cause it? It's not overclocked or under/overvolted. It is red hot to the touch.

Looking around some peeps say it could be the CPU fan header detecting that the connected fan/pump reads 0RPM for a split second, which causes a power off.

thebennyboy · 26 Feb 2015 at 18:01

Am still getting this issue.

stulid · 26 Feb 2015 at 18:05

So is the CPU back at stock now and still doing it?

Is there sufficient cooling in the case going over the VRM area?

mcleish · 26 Feb 2015 at 18:42

Could be a PSU issue.
Ive had the event-id 41 before and I narrowed it down to an audio driver conflict. I disabled all of my drivers apart from the Realtek one and its been happy ever since.

thebennyboy · 26 Feb 2015 at 19:00

stulid said:
So is the CPU back at stock now and still doing it?

Is there sufficient cooling in the case going over the VRM area?

Yes it's back at stock (3.5Ghz) and it's still doing it. There is the rear fan on the case which is blowing air over the VRM area which is hot to the touch but not overly hot.

The Northbridge however seems to be red hot to the touch, i can hardly touch it.

Josh · 26 Feb 2015 at 19:03

I had a issue similar on 8.1 - not sure if that is your OS but might be a checked option in the power settings.

Might be the complete wrong thing however.

thebennyboy · 26 Feb 2015 at 19:23

Could a faulty SSD cause it?

BRIGGBOY81 · 26 Feb 2015 at 19:38

i had the same problem a while ago which ended up with me buying a new psu. although i am not to bothered about replacing the psu as it was starting to sound like a jet plane, the problem was actually the akasa 24 pin cable extension had melted to of its pins. so check everything is my advice.

thebennyboy · 26 Feb 2015 at 19:57

BRIGGBOY81 said:
i had the same problem a while ago which ended up with me buying a new psu. although i am not to bothered about replacing the psu as it was starting to sound like a jet plane, the problem was actually the akasa 24 pin cable extension had melted to of its pins. so check everything is my advice.

That interesting actually, i use an Akasa 8 pin extention for the CPU power. I'll check that. My 8320 does draw a lot of power, maybe as you said it has melted.

Am i covered by any sort of warranty if that happens? The PSU is only like 6 months old. The extension is only like a couple of months.

BRIGGBOY81 · 26 Feb 2015 at 20:19

not sure about the warranty fella

thebennyboy · 26 Feb 2015 at 21:50

Found the issue. Front fan controller on the case is faulty, one of the soldered joints has failed on it's PCB. Does anyone know if Fractal Design stock the front I/O PCB? I have opened a ticket on their support page but am wondering if anyone knows in the meantime.

thebennyboy · 28 Feb 2015 at 20:59

Turns out that isn't the problem as after disconnecting the front I/O it's happening again. Really don't know what it's likely to be now and i'm honestly stumped. This time it happened though the PC wouldn't power back on at all! Took about 2 - 3 minutes before i got it to power on again. Is it more likely to be a PSU problem at this point?

BRIGGBOY81 · 28 Feb 2015 at 23:01

yeah deffo souinds like the psu fella. how old is it?

SlugForAButt · 28 Feb 2015 at 23:19

TBH mate, I just read your first post and thought PSU straight away.
Just my twopenneth, but that's the first place I'd look.

thebennyboy · 28 Feb 2015 at 23:32

BRIGGBOY81 said:
yeah deffo souinds like the psu fella. how old is it?

About 4 months old.

Techno-Geek · 1 Mar 2015 at 00:06

First thing I would do with it would be to try a different PSU. I would come and have a look for you but Wales is a bit of a trek

thebennyboy · 1 Mar 2015 at 01:44

Techno-Geek said:
First thing I would do with it would be to try a different PSU. I would come and have a look for you but Wales is a bit of a trek

I've just done a complete re-wire of my entire PC and it's working fine for now. Fingers crossed it's sorted now. Removed some unnecessary cables from my PC.

biuro74 · 1 Mar 2015 at 11:56

thebennyboy said:
I've just done a complete re-wire of my entire PC and it's working fine for now. Fingers crossed it's sorted now. Removed some unnecessary cables from my PC.

Rewiring might help to improve aircooling inside, so your nb would be a bit colder. But I'd suggest you buying a fan (30-35mm - depending of NB size, sorry have no time to check your mobo) and placing it to NB. If you don't mind, you can change thermal grease underneath as well, if you know how to do it.