Computer shuts down when doing certain tasks

September 6, 2009 at 13:53:03
Specs: Linux i686
Here is my main problem, which happens on BOTH Linux and Windows XP:

When I do something CPU-intensive, within a few seconds or minutes the PC just shuts down.

The power light stays on, but the system is shut down, and the only way to turn it back on is to unplug the power cord for a few seconds, then plug it back in, and then turn it on.

This problem ALWAYS happens when I try to convert a video file, but sometimes I could just be watching an XviD movie, and it'll happen within about 5-20 mins.

I've tried searching online for people with similar problems, but found nothing.

I've tried enabling or disabling SMART Fan in the BIOS.

I put in a new CPU fan about two months ago.

I've tried uninstalling and re-installing software.

I've tried removing my video card to use the internal video, but it still didn't make a difference

I've even tried unplugging all hard drives and running Linux from CD, and STILL the system shuts down when I try to convert video.

I've tried taking out one stick of RAM, then the other.

This really puzzles me, because I can do regular tasks like browsing the internet, managing files, burning data DVDs, so I really can't trace what the problem is.

If it were a faulty motherboard, would I still be able to do the things I'm doing?

The only remaining piece of hardware I can think of that could be the problem is the power supply.

I want to be 100% sure that that's the problem before going out and buying a new power supply.

I forgot to mention my system specs:

Intel Pentium 4 3.2Ghz CPU
ECS Elitegroup motherboard
2GB RAM
2 DVD burners
Nvidia 5200 graphics card
USB 5.1 soundcard
Western Digital HD 320GB
Maxtor HD 200GB

Currently using Ubuntu 9.04 (Linux), but not that that matters, because this is not an OS problem.


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#1
September 6, 2009 at 14:25:43
I forgot to mention that I tried a few things in Windows XP:

I first scanned for a virus using Avast, and it found nothing.

I also tried defragmenting the hard drives, but that did nothing either.

I also tried this program (I forget the name) that tells you the current PC's temperature, and I looked at this while converting video, and the temperature stayed within the same range (80-82) the whole time, until it finally shut the system down.

I read up on the forums here and found someone saying something about the power supply, relating to someone else having their computer shut down randomly. He asked if the fan in it was spinning. This made me check mine, and I notice that the fan is NOT spinning! IDK how long it's been like that, but I would assume it SHOULD be spinning, but then again, when the system shuts down the power supply isn't always hot.


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#2
September 6, 2009 at 14:48:35
"and the temperature stayed within the same range (80-82)"

I don't run Intel stuff but that temperature looks to be too hot to me.

Try using Speedfan to monitor the temperatures. Watch the system temps too.

http://download.cnet.com/SpeedFan/3...


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#3
September 6, 2009 at 15:44:39
Go with OtheHill.

Shutting down during high activity is a classic symptom of overheating, so your fan is probably the issue.

some other bloke...


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