Computer Shutting off Without Warning

November 11, 2015 at 18:37:31
Specs: Windows 7, Intel Core i3/8.00GB
Hello everyone,

I have had an issue with my computer shutting off randomly for a few months now. First, it happened when I first started playing Dark Souls 2. I could get about 3 minutes into playing before it did a hard shutdown. It was the most graphically intense game I had tried to play on my computer by far, but my card and processor were equipped for it.

My first thought was definitely overheating, but after some diagnostics that was ruled out. I kept trying play and after a few days of getting to play for more than 10 minutes on and off, it never happened again. But I did absolutely nothing.

Enter Star Wars Battlefront Beta and Fallout 4.

I am now having the same exact issue with these two games (well now the beta is over). Through some more searching the interwebs and help from my dad, I decided to just get a new power supply entirely. It made sense, because we bought the computer from a guy a few years ago (almost 4 I think?), and at the time I was only running it with the built in graphics card. So I figured the power supply was getting old, and maybe it couldn't support the GTX 750 I have in it now.

But before I did that, I thought I might check what the current supply wattage is. So I open my case and take out the supply, and I am looking all around it for any information. Turns out, there wasn't any stickers or anything with any information. But while I was there, I decided to give my computer a nice cleaning.

After I finished that, and put everything back together. The end result, my computer can't even do normal tasks now.

It would shut down within about 5 minutes of starting up, even when I did absolutely nothing.

So, I said screw it and bought a new Thermaltake 430W and installed it. With eyes gleaming and nerves high, I turned on my computer, waited for all the startup programs to do their thing, and....crash.

Over an hour of time, I just kept turning it on and trying to do things, sometimes with more luck than others. The best of being gets 30% through the download of Fallout 4. The worst being shutting down while waiting for Firefox to load.

Now, it has steadied for about 30 minutes as I checked my email and wrote this message. I am going to try Fallout once more, and then I am done for the day.

So I thought I'd drop a message here, in case anyone had any brilliant ideas. Some other possible culprits I have read about, and will investigate further, include the following:

-Mobo connections
-UPS/Surge Protector

Thanks in advance for any help!

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November 11, 2015 at 19:17:10
If a brand model comp, exact model please.

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November 11, 2015 at 19:21:04
"will investigate further, include the following:"

Lets check out this side of things.

Run them in this order.

Step 1: Run AdwCleaner
Author's site
Close all open programs and internet browsers.
Double click on AdwCleaner.exe to run the tool.
Click Scan
In the results tabs, uncheck anything you don't want to remove.
Click on Cleaning.
Confirm each time with Ok.
Your computer will be rebooted automatically. A text file will open after the restart.
Please Copy & Paste the contents of that logfile with your next answer.
You can find the logfile at C:\AdwCleaner[S1].txt as well.

Step 2: Run Junkware Removal Tool
Malwarebytes Acquires Junkware Removal Tool
Download Junkware Removal Tool onto your Desktop. If your default download location is not the Desktop, drag it out of it's location onto the Desktop.
Warning! Once the scan is complete JRT will shut down your browser with NO warning.
Shut down your protection software now to avoid potential conflicts.
Temporarily disable your antivirus and any antispyware real time protection before performing a scan.
Click this link to see a list of security programs that should be disabled and how to disable them.
Run the tool by double-clicking it. If you are using Windows Vista or Windows 7/8, right-click JRT and select Run as Administrator.
The tool will open and start scanning your system.
Please be patient as this can take a while to complete depending on your system's specifications.
On completion, a log (JRT.txt) is saved onto your Desktop and will automatically open.
Copy and Paste the contents of the JRT.txt log please.

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November 11, 2015 at 19:47:55
First, when you cleaned out the case, did you by any chance remove the heat sink/fan from the CPU? If you did then you need to do this over properly. Once the heat sink is removed from the CPU, all of the thermal material needs to be completely removed and the proper amount of thermal compound properly applied (see link below) and reassembled.

In addition to that, double check all connectors to make sure that everything is plugged in completely such as the 4 or 8 pin CPU connector.

Using HWMonitor run the system and look for unusual temperature rises, voltages that are not within 5% of their nominal values, or anything out of the ordinary.

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

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Related Solutions

November 12, 2015 at 07:04:29
Wattage is irrelevant. Power supplies are selected by power from each individual voltage. Since most computer assemblers know nothing about electricity, then PSUs are often recommended at double what the computer really needs.

To say anything useful requires facts you have not provided. That means using a meter, some requested instructions, and minutes of labor. The resulting three digit numbers means a fewer who really know how this stuff works can finally post something useful.

Unfortunately you shotgunned based in wild speculation. If a computer was not completely choked up with dust, then heat in a 70 degree F room is reporting a hardware defect. Heat is a diagnostic tool that finds defective hardware. Others, using only hearsay, want to cure the symptom (ie heat) rather than fix the problem (a failing part).

Apparently the problem is now been made worse by making changes without first collecting facts. Every new 'change' can make solutions exponentially more complex. Best is to collect fact before making changes. Recommended was how to do that - by not even disconnecting one wire.

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November 12, 2015 at 19:02:55
It sounds like you may have a software and a hardware problem.

This computer was purchased used 4 years ago. Did you do a fresh OS install on it, or did you just use whatever was there? Do you know and trust the person who sold it to you? And even if you do, there may have been changes that are adversely affecting you now.

How long was it after you purchased this computer that you started playing Dark Souls 2 on it?

You mentioned playing other games when the problem returned. How long was it between the time you stopped playing Dark Souls and you started experiencing problems again?

Later you said the machine crashed while downloading fallout 4. Did you ever get to actually playing it or were you re-downloading it and why?

You said things got worse after you opened it up. Please expand on how you went about cleaning inside.

You say the new supply is 430W and the old one was not marked. How do you know the new supply is rated higher? I would suggest you put the old one back in for now.

Then, try and work your way backwards to before you opened it up to clean it, at least in thought if not in action. Maybe you'll see something in the assembly that's not quite right.

Then follow Johnw's advice if you can get it up an running again long enough to do so.

message edited by ISAmad

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