PC randomly turns off without closing windows.

[bobcat19]

Sometimes my computer turns off by itself without shutting windows down. It doesn't restart itself. I have just put a new-ish power supply and it's done it now with the new PSU as well as with the old.

I checked the event viewer and this is what I get: The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

Source: Kernel-Power
Event ID: 41

If anyone wants more details I can post a screenshot...

My CPU is sitting at around 37 degrees celsius, it's max is supposed to be around the 80 degree mark.

It shuts down sometimes when I have 4+ browser windows open.

I will try to post my system specs soon, and I'm sorry that this post is a bit disjointed, I typed things as they came to me.

Any help will be much appreciated.

 

[DocBrown]

:ar: http://www.sevenforums.com/tutorials/180324-system-info-see-your-system-specs.html

 

[bobcat19]

Tried downloading that, however I get an error when I try to run it.

 

[DavidE]

Make sure you do not have "Automatically Restart" checked in your System Properties (see Screen Print).
If Windows crashes, you probably will see a BSOD if "Automatically Restart" is not checked.

Do as DocBrown instructed to update your specs.

If it's not a Windows crash, i would suspect a faulty PSU ...

 

[Indianatone]

Tried downloading that, however I get an error when I try to run it.

You need to install .Net from Windows updates or here Download Microsoft .NET Framework 4 (Web Installer) from Official Microsoft Download Center
Is your system fully updated ?Do you have SP1 installed ? If not update and see if that cures the possible blue screen as DavidW7ncus has told you to get the system to show.

 

[DocBrown]

If you could not run the System Info programs. You may have Malware or Spyware on your computer. Run a scan using MalwareBytes :ar: Malwarebytes : Free anti-malware download (FREE Edition)

 

[bobcat19]

How likely is it that both my PSU's have exactly the same fault causing exactly the same problem?

I can't run that file because I get that error message I posted up before, however I do have Everest and I've taken a few screenshots, best I could do, sorry.

 

[DavidE]

I've seen this issue when using that tool to get system specs.

You can also use Speccy to get your System Info without needing to install .Net. ...

Speccy - System Information - Free Download

 

[bobcat19]

If you could not run the System Info programs. You may have Malware or Spyware on your computer. Run a scan using MalwareBytes :ar: Malwarebytes : Free anti-malware download (FREE Edition)

I just installed Windows 7 yesterday, but I will check regardless, thanks.

 

[DavidE]

How likely is it that both my PSU's have exactly the same fault causing exactly the same problem?

Probably not likely if they are quality PSU's that can deliver enough power.
What make, model, and power rating are your PSU's?

Do you have "Automatically Restart" turned off?

 

[DocBrown]

Here is another way to see your system info specs

:ar: SIW | System Information for Windows by Gabriel Topala

 

[bobcat19]

How likely is it that both my PSU's have exactly the same fault causing exactly the same problem?

Probably not likely if they are quality PSU's that can deliver enough power.
What make, model, and power rating are your PSU's?

Do you have "Automatically Restart" turned off?

My old PSU was a no name 370watt thing, the one I just installed is a seasonic X650 Gold, almost new.

I'm not sure I understand what the automatic restart has to do with it. When it happens I don't get a blue screen or anything, it just turns off as if I've held down the power button.

 

[bobcat19]

Here's a snapshot from speccy

 

[DavidE]

I'm not sure I understand what the automatic restart has to do with it. When it happens I don't get a blue screen or anything, it just turns off as if I've held down the power button.

You won't see the blue screen if there is a BSOD and you have "Automatically Restart" set.

 

[bobcat19]

Oh ok, I've stopped the automatic restart. It hasn't happen again yet, but when it does, do I write down an error code or something?

 

[DavidE]

The next time it happens let us know if you do see a BSOD blue screen, and we'll go from there.

This setting change is just trying to determine if you are getting a BSOD and don't know it.

 

[bobcat19]

The next time it happens let us know if you do see a BSOD blue screen, and we'll go from there.

This setting change is just trying to determine if you are getting a BSOD and don't know it.

Ok, ill post a reply as soon as it happens again, but like i said its quite random, it may happen multiple times in one day or it may not happen for weeks.

 

[pincushion]

Probably nothing to do with this issue but have you altered the pagefile settings? I once had mine logging off when I had a fixed pagefile that was too small apparently - didn't occur when made larger (still fixed) and this had never happened before I played about with pagefile sizes. Logging off and shutting down are probably separate issues though. Just a thought.

:huh:

 

[DavidE]

Ok, ill post a reply as soon as it happens again, but like i said its quite random, it may happen multiple times in one day or it may not happen for weeks.

Understood, but as it may not happen for weeks I'll add this...

If you do get a BSOD, you will need the Dump (DMP) file for troubleshooting.
Check your settings to see if you will get a DMP file.
You can look at my settings in Post #4 screen print under "Write debugging information".

This is my understanding/belief, and hopefully someone will correct me if I'm wrong:
- To capture a DMP file, a pagefile is needed on the C: (Windows OS) partition.
- A minimum 200 MB pagefile is needed for a mini dump.
- A minimum 1024 MB pagefile is needed for a full dump.

I'm no BSOD expert, but there is a BSOD Team in SF if needed.
If you do get a BSOD, here are posting instructions:
http://www.sevenforums.com/crashes-debugging/96879-blue-screen-death-bsod-posting-instructions.html

I didn't want to overly complicate or confuse your issue with all this...
But, now i have :shock:

Hope this helps,
David

 

[bej]

Google the Kernel Power Event ID 41 and you'll see it's a continuing problem in
Win 7 and there has been no solution found.
Matter of fact it happened to me yesterday. First time in over a year. I touched the side of
the case and the system rebooted. Looked at the details for the event and
the debugging information was all ZEROS. Windows doesn't know why it rebooted.
Something I do know is, for several months, everytime I would insert a USB stick my
system would reboot regardless of which port I tried. So, the usual thought about wiring, the ports are defective, et al. I can't remember how I stumbled on the "fix", but it turned out to be static electricity.
Now, when wanting to use the USB stick, I wipe the metal portion of the stick across the
metal leg of the computer desk a couple of times, then insert it. Haven't had a reboot since.
That worked for me. YMMV.