Why is my PC shutting down unexpectedly?

January 16, 2015 at 09:52:10
Specs: Windows 7
Here's my PC build:

CPU: Intel i7-2600k
RAM:2x4GB MHz
MB: Gigabyte Z68-UD3H-B3 rev 1.0
GPU: AMD 6870 1GB
PSU: Corsair GS800

My PC has been unexpectedly shutting down and freezing whether gaming, internet browsing, word processing, or idling and doing absolutely nothing. At first it only would freeze up and sound would come out of the speakers in a continuous loop. I thought the video card went bad again so I removed it and used integrated. The problem still came back which led me to clean out my entire system, both by cleaning out the case and rewiring and formatting the drives and installing Windows 7 from my previous Windows 8 setup. But yet again it shut down by itself. I then thought it was the PSU so I bought a tester for it. It was cheap but I bought it anyway and it showed that there was no -5V signal. Whether that is true or not I don't know if that is significant enough to cause a shutdown. Furthermore I decided to flash my Bios to UEFI and get rid of all unnecessary hardware from the PC. I got rid of extra drives and add-on cards and was left with all my ram, my graphics card, and one ssd. I also had my power supply running outside the case and my case being fully opened. This definitely helped. I never had a shut down, and ran my setup like this for over a week. I plugged in all my other drives and still no shutdown for another week! I put everything back in my case and within 3 hours a shutdown occurs... and later that day it happened again.

Most people online say power supplies are the main culprit here but a lot of people tell me the problems I get also looks like my CPU is overheating because of the freezing. I think my CPU temps are just fine however. You be the judge: http://imgur.com/FBAshJu

I’d like to find out what is causing the problem here and if anyone reading this needs further information then let me know because I would be glad to provide it for you. Hopefully someone knowledgeable can help me with this.


See More: Why is my PC shutting down unexpectedly?

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#1
January 16, 2015 at 13:39:54
Copy & Paste the dump (.dmp ) file onto your desktop & then upload it using ZippyShare. No account needed. Post the link please.
http://www.zippyshare.com/
Instructions on how to use ZippyShare.
http://i.imgur.com/naG6t2T.gif
http://i.imgur.com/Vi9ZdIh.gif
http://i.imgur.com/1IZu5kP.gif
Minidump file is located in C:\Windows\Minidump
How to see hidden files in Windows
http://www.bleepingcomputer.com/tut...

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#2
January 16, 2015 at 17:30:56
There is no memory dump being recorded. The PC yet again shutdown at 7:15PM CST and I checked for the MiniDump folder and it wasn't created.

Here's a screenshot that shows that the settings are properly setup for a .dmp file to be created: http://imgur.com/UeSlR80


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#3
January 16, 2015 at 17:59:20
We need clues.
You can uncheck > Automatically restart.
That will let you read any messages that appear onscreen.

In the meantime I can look at these logs for clues.

Please download Farbar Recovery Scan Tool and save it onto your Desktop. If your default download location is not the Desktop, drag it out of it's location onto the Desktop.
http://www.bleepingcomputer.com/dow...
If we have to run Farbar more than once, refer this SS.
http://i.imgur.com/yUxNw0j.gif
Note: You need to run the version compatible with your system. If you are not sure which version applies to your system download both of them and try to run them. Only one of them will run on your system, that will be the right version.
Double-click to run it. When the tool opens click Yes to disclaimer.
Press Scan button.
It will make a log (FRST.txt) on the Desktop.
The first time the tool is run, it makes also another log (Addition.txt).
The logs are large, upload them using this, or upload to a site of your choosing. No account needed. Give us the links please.
http://www.zippyshare.com/
Instructions on how to use ZippyShare.
http://i.imgur.com/naG6t2T.gif
http://i.imgur.com/Vi9ZdIh.gif
http://i.imgur.com/1IZu5kP.gif

message edited by Johnw


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Related Solutions

#4
January 17, 2015 at 05:41:09
Temps look good but you are only showing one fan unless your case fan is plugged directly into power supply or through an external controller.
Check to make sure that you do not have any extra posts under your motherboard and all of the posts have screws in them as well as any loose screws that may have ended up under the motherboard or other components. Look for wires that may be pinched under components or cut on sharp edges of your case. I am thinking that there is something that is being grounded out (or intermittent ground) but with the power supply outside of the case, the ground is broken, so no problem. Also remove all plugs, inspect all plugs to make sure that all of the connectors were fully inserted into the plug's body and replug them, making sure that all of them click fully into place. These are rare possibilities but worth looking into.

You have to be a little bit crazy to keep you from going insane.


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#5
January 21, 2015 at 09:32:20
Ok I had trouble running FRST since Norton classified it as a Trojan. After that I ran it and got the Addition and FRST text files. I uploaded them here:

https://www.mediafire.com/folder/1i...

Let me know if anything stands out to you. Thanks!


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#6
January 21, 2015 at 09:40:31
I checked for any extra posts under the motherboard and even took the power supply out again. Unfortunately, unlike before, the PC is now shutting down with PSU out of case. Hopefully the logs I provided in the above post can pinpoint a problem. My guess is that the motherboard is faulty because if the temperatures of all the PC components are fine and the PSU passed on the tester I bought, as I pointed out earlier, then really the motherboard is the only part that is left. I wouldn't mind buying another power supply if only I had more proof to backup that the PSU was to blame. Unfortunately I don't. Further more to prevent any shorts I also taped every end of my unused cables coming from the PSU and it didn't help. In fact now the PC will sometimes shut down within a minute from booting up, which is something completely new. Is there ways of testing a motherboard? Thanks.

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#7
January 21, 2015 at 14:26:45
"Norton classified it as a Trojan"
That's very common, some AV's do, some don't. ( false positive )

You will see in your logs > Event log errors:
SpotifyWebHelper is the first problem, I would remove it for testing, using Wise.

Wise Program Uninstaller
http://www.softpedia.com/get/Tweak/...
http://www.freewarefiles.com/Wise-P...
http://www.freewarefiles.com/screen...
http://wisecleaner.com/wiseuninstal...


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#8
January 21, 2015 at 14:31:36
" I wouldn't mind buying another power supply"
Borrow one, ask around, most people have an unused comp.
As long as the wattage is at least what is required.
No need to bolt it in.

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#9
January 21, 2015 at 21:16:35
Another indicator of a bad power supply is that the different voltages in your BIOS are not withing the 5% acceptable limits of the nominal voltages (12Volt +/- 5%, etc). Not a guaranty either way, just an indicator. Outside of the 5% means that it really should be replaced anyway.

You have to be a little bit crazy to keep you from going insane.


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#10
January 22, 2015 at 18:25:44
So I bought another power supply, a CX750M 750 watt PSU from Corsair again. It was the only thing powerful enough that my local Best Buy carried. It is still 100 or more watts more than I need anyhow. I will post in a few days whether I shutdown or crash. Hopefully it was the stupid power supply and nothing else.

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#11
January 22, 2015 at 21:27:47
Keep us updated. Swapping the power supply may not be cheap and the need to is annoying, but in the end, if it was the problem, getting it solved is the most important thing and is an easy solution if it works.

You have to be a little bit crazy to keep you from going insane.


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#12
January 23, 2015 at 19:37:26
Okay, small mini update. The PC has been running all day and no shutdowns! Hooray! However I went out a few hours ago and left the PC running to see if it will shutdown when I'm gone. I came home 3 to 4 hours later and the PC was still running. This is where I'm confused. On one hand the PC is running but on the other hand I can't use it. There is no picture on the display, all the USB devices seem to not be working (no green power indicators), mouse and keyboard not responsive. I unplugged and re-plugged the USB devices with no response still. I then plugged in an extra monitor to the graphics card and no picture came out of it. I shutdown the PC and tried starting it up again. The PC kept turning on and off 3-4 times in a matter of 10 seconds. One after another failed startup. Then it started up and is continually running.

Does anyone know why it became unresponsive in the first place? I also have Teamviewer running in the background all the time and I tried using remote desktop but the PC was "offline" so either it wasn't running at all (Windows or SSD) or it went offline for some reason.

Also why would there be a reboot loop?

message edited by apokhvalit


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#13
January 24, 2015 at 16:33:56
So who marked this solved? It does not sound like it is solved to me...

You have to be a little bit crazy to keep you from going insane.


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#14
January 25, 2015 at 10:53:41
More unfortunate news. The PC began freezing up again. Static of some sort comes out of the speakers when this happens. I am now under the assumption that the motherboard or the CPU is garbage, but which one? Is there a way to test it at home? Is it worth it at all?

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#15
January 25, 2015 at 12:59:02
Does it freeze in Safe mode?

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#16
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#17
January 28, 2015 at 09:15:46
Those programs say my CPU passed all tests! I can't figure out how to test the motherboard with these programs. They all say I have to buy a license to diagnose the motherboard.

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#18
January 28, 2015 at 09:17:17
So motherboard it is then. Is there a reliable place to buy a motherboard for older processors like my sandy bridge 2600k?

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#19
January 28, 2015 at 11:47:21
I just noticed that you have an SSD drive, there are certain settings you need to do to get the system to work properly with an SSD drive. Please look over this to get a few tips on this, maybe there is something that you missed and it is a setting in Windows that is not compatible with an SSD drive that is causing your issue and it can more easily be fixed this way:
http://www.overclock.net/t/1156654/...
For example, you might have Windows trying to defrag or index or the drive is being powered down and it is hanging. SSD's should not be defragged, should not be allowing Windows to do indexing, and even powering down after a specific time of non-use (or windows thinks it is not doing anything) can cause problems. More is explained in the article.

You have to be a little bit crazy to keep you from going insane.


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#20
February 12, 2015 at 09:53:23
Well after having a frustrating morning with my PC not booting at all I decided to take the whole PC apart and try run the PC outside the case entirely, laying out all the parts on my desk. It was running fine when I did this. I then chose to take the CMOS battery out for half an hour and plugged it back in. I put the PC back together in a very sloppy way, with half of the screws missing and no cable management what so ever. Pushing everything back in and closing the case side panels because I was almost certain I would have to take it apart in the near future. However I was in for a surprise because the PC has not shutdown or frozen in the last 2 weeks!

I thought I had solved the problem, even though I still don't know what I did to fix it. Maybe a wire had too much stress on it due to it being bent or the battery reset helped but something changed. That is until recently...

I turn my PC on every morning at 9AM and let it run and do different tasks until 5PM. This includes internet browsing, photoshop, and at least 2 hours of gaming. I try to throw a lot at the PC everyday now to see if anything changes. It will run fine for the 8 hours I have it on. I then come back to it at around 10PM, and for the last 3 days it will enter a reboot loop every time. It will turn on but the display won't, leading it to shutdown and restart once more with a flash page that reads "GIGABYTE UEFI BIOS" on the screen. The only time I ever saw this being displayed was when I reset my CMOS battery. (This is not the usual boot-up splash page). It will restart again and again until I press and hold the power button and shut it down my self. I then unplug the PC from the wall and wait a minute. Once this is done I plug it back in and the PC will boot up fine.

The really weird thing about all of this is that the next morning when I wake up it will boot-up fine and run fine. But once I get back to it at 10PM, everyday it has been consistently the same time, it will fail on me. It looks like a pattern to me. I am almost certain the motherboard is the issue since I have found that this revision has had boot loop issues, having the PC rebooting constantly. I also have Phase LEDs lighting up on the motherboard, with DD4 actively red and DD3 looks yellow (DD1+2 green).

I will be keeping the PC on all day today and see if it shuts down by itself. Hopefully not. Cheers!


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#21
February 12, 2015 at 13:04:32
Trillions of error combinations out there, this is how to track them down. On screen message must be exact into google.

Adjust keywords to suit.

continuous reboot gigabyte uefi bios message on screen
http://bit.ly/1B3rEkh


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#22
February 12, 2015 at 13:05:52
The logs from my post #3 will help.

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#23
February 12, 2015 at 15:27:58
When you removed the CMOS battery did you reset the BIOS to defaults? Or better yet to Optimized settings? Then go back in and manually check/set CPU. Memory, clock, etc.?

Before purchasing a new motherboard, try updating the BIOS to the latest because if there are actually motherboard known issues, they may be addressed in subsequent BIOS updates.

You have to be a little bit crazy to keep you from going insane.


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