Computer Shuts Off Randomly

July 9, 2014 at 13:38:36
Specs: Windows 7
I built my first computer several months ago, and I have had a reoccurring problem in which the computer will randomly shut off without warning. I have tried several time to alleviate the problem, but the random shut off still persist.

Yesterday I had enough of it and decided to do a complete hard drive wipe, hoping to be rid of the problem for good, and today I was on it reinstalling some of my drivers when it shut off again. I have tried swapping the power supply, reinstalling the memory, a hard reset, reconnecting all of the internal wires and nothing seems to help. I'm on my last legs here and I was wondering if anyone had any problems like mine, I really have no idea what to do from here...


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#1
July 9, 2014 at 14:51:32
Have you checked temperatures because overheating can be a common cause of shut-downs. When you fitted the CPU did you apply the thermal grease exactly in accordance with the instructions for the CPU?

Always pop back and let us know the outcome - thanks


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#2
July 9, 2014 at 15:28:33
I've checked the temperature in the BIOS and everything seems to be running at fairly average temperature. As for the thermal paste, I didn't follow the instructions for the CPU but followed some instructions given online. I put a dab on the back of the CPU and spread it evenly using a plastic bag. Not to mention that the computer can sometimes shut off even when idle, it seems to do nothing with how much workload the CPU has at the time...

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#3
July 9, 2014 at 16:10:01
There are many possible causes. The fact that it did it again after a rewipe makes me thing it is some sort of hardware issue.

Take out the RAM sticks and clean their edge connectors with a pencil eraser, then pop them in and out a few times to clear any oxide on the sockets. You could do the same for other items with edge connectors such as the video card. To take RAM out of the equation you could run this test:
http://pcsupport.about.com/od/tools...

Is the PSU adequate for the job? An underated PSU can also cause this issue.

One way to help prove whether it is hardware, if it happens frequently enough, is to run a Linux Live CD on it (just runs between RAM and CD only).

Always pop back and let us know the outcome - thanks


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#4
July 9, 2014 at 16:22:30
Monitor the temps real time with the program HWMonitor to see how using it effects the temps.
Spreading the thermal compound causes air pockets which act as insulators. If there are enough of them, the problem will be much more pronounced during the stress of continuous use where the heat will not dissipate fast enough to the heat sink.
http://www.arcticsilver.com/methods...
Look up your CPU and follow the proper method. Remove all old compound and do it right.

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


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#5
July 9, 2014 at 20:34:49
A few weeks ago I reinstalled the RAM and that seemed to work for a little while, however after a few days it started randomly shutting down again, so it would make since if that could be the source of the problem. I went ahead and cleaned off all the connectors and am giving it a test run now. I'm going to see if anything changes, if not I'll go ahead and try out Memtest86 so that I can be sure it's the RAM. I'll give y'all an update in a while.

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