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Old 03-02-2010, 02:59 PM
BernardV BernardV is offline
 
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Unhappy How to diagnose intermittent hangs...

A customer of mine keeps getting intermittent hangs during computer usage.
After an initial on location check up and some adjustments, the computer still has issues.
When I turn on the computer, there is no obvious problem to be found, but apparently after some time of usage sometimes the computer hangs (stops responding).
I already advised the curstomer to make a kind of diary, with information when this hangs occured; like how often and what software is running.
Still I can't seem to find a good indication what's wrong. If I look at the list it happens during internet, during games (local), after the computer was idle for some time, etc.
I have already tried an memory scan, looked at the log books, looked at the cpu and motherboard temp, but can't seem to find a good clue to what's wrong.
I did find 2 blue screen logs, however these are very recent and could be a result of corruption because the computer wasn't properely shutdown.

So I hope I could get some suggestions what to do.
Are there any test I could perform, to get some more idea what's really wrong ?


Thanks for any help and suggestions.
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Old 03-02-2010, 03:58 PM
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Default Re:

Have you tried an OS repair?
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Old 03-02-2010, 05:02 PM
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Default Intermittent hangs

I'd try changing the power supply.
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Old 03-03-2010, 06:17 PM
BernardV BernardV is offline
 
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Question

Thanks for the suggestions.
How do others cope with the intermittent aspect ?
Are there any (additional) test to perform to be sure what's wrong.
I've tried to reproduce, but it's very hard to get the computer to hang.
So how do I make sure that the computer is indeed fixed ? Or should I inform the client that it's hard to find the problem and an 'easy' fix can't be profided ?
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Old 03-03-2010, 07:41 PM
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I would check for bad sectors on the hard drive, I am having issues with one right now and ran the ibm drive fitness test on it and it found lots of bad sectors.
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Old 03-03-2010, 07:49 PM
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I would say the HDD. It's a pain to diagnose random hang ups / shut downs / restarts and whatever...
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Old 03-05-2010, 04:35 AM
Comtech Solutions Comtech Solutions is offline
 
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System logs? Debugging? Whocrashed?

Maybe you just need more RAM...
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Old 03-05-2010, 05:18 AM
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Quote:
Originally Posted by BernardV View Post
How do others cope with the intermittent aspect ?
Are there any (additional) test to perform to be sure what's wrong.
What I personally do on Macs is get the CPU going at 100% sometimes overnight or for a couple of days to make sure there are no issues. On Macs there is a built in grapher utility and a chess application. Get 6 games of computer vs. computer chess set on strong along with grapher running 6 examples and I can almost always get a machine to freak (if it has issues) putting it under that much stress. Another thing I found that works is streaming video. The higher resolution the better.
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Old 03-05-2010, 06:51 AM
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I know you already checked temps, but this really sounds like a heat problem to me. Check all the fans and heatsinks, GPU, CPU, PSU, northbridge...Make sure everything is secured and nothing is clogged with dust.
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Old 03-05-2010, 09:59 AM
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If you have checked for spy-ware, viruses, and other malicious code. Given the fact that it doesn't start misbehaving until some amount of activity it sure does sound like a hardware issue.It may be the CPU. I do remember having a similar problem before and it was the processor ( I just started replacing various components until the problem went away ). Also check the Scheduled Tasks. I believe that I read someone else's thread on here about a troublesome virus that was using the Task Scheduler. But I believe that your looking at a hardware problem. Note: I believe that some processors go into a low power stage when something may be wrong. Someone else may be able to clarify a little more to that.

Note: I forgot to mention that some of my friends were playing farmville online and was causing a low memory problem. They used firefox and I installed the memory manager. No more problem.

Last edited by Shark; 03-06-2010 at 07:49 AM. Reason: Forgot to mention
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