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Solved: Dell Latitude D600 undemanded shut-down

Discussion in 'Hardware' started by oldcelt, Jun 27, 2014.

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  1. oldcelt

    oldcelt Thread Starter

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    My Dell laptop shuts itself down after running for about ten hours. The power option in settings is set at "Never shut down" because it's used for CCTV detection and recording.

    The most likely cause has been reported as overheating due to a clogged fan and heatsink. So, to avoid wasting time, I bought and fitted a new fan and heatsink and cleaned out the inside of the case whilst I had it in pieces.

    Unfortunately, that hasn't solved the problem.

    Any other ideas gratefully received.
     
  2. Ze_Dude

    Ze_Dude

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    Is the thermal grease applied properly on both the heatsink and CPU? If it is, the power supply might be dying.
     
  3. flavallee

    flavallee Trusted Advisor

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    The Dell Latitude D600 laptop was introduced in March 2003, so it's well over 10 years old.

    ----------------------------------------------------------
     
  4. oldcelt

    oldcelt Thread Starter

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    Yeah, fresh thermal grease applied with new heatsink instalation.
     
  5. oldcelt

    oldcelt Thread Starter

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    Tell me something I don't know!
     
  6. Ze_Dude

    Ze_Dude

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    Ok, that pretty much means that your power supply unit might be failing. It's still working O.K., but the problem would most likely be solved if you replaced it. I just wouldn't rely on it much.
     
  7. oldcelt

    oldcelt Thread Starter

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    Thanks - fair comment.
    However, if it runs with the power supply for about ten hours, wouldn't it continue to run on the battery in standby mode if the power supply failed?

    I have to confess that I haven't set it to run on a never shut down basis when on batteries. Trying that setup may show if the power supply failed and it continued on the battery until the battery ran out. That could easily last until morning since it's doing nothing unless the CCTV camera is triggered. Doesn't happen much during the night period as we're pretty isolated.

    The battery shows maximum charge status when the machine is running during the day - ?
     
  8. Ze_Dude

    Ze_Dude

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    The power supply is not the charger, the battery provides power for the power supply and the power supply sends the power to all the components. When plugged in, the charger provides power for the power supply. After about 10 hours, the power supply fails, no matter whether or not the battery or charger is still going.
     
  9. Ze_Dude

    Ze_Dude

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    Also, I wouldn't keep leaving it on for 10 hours like that, as when a power supply fails the computer usually doesn't shut down safely, and this can lead to lost or corrupted files (or worse).
     
  10. oldcelt

    oldcelt Thread Starter

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    There are no files to loose or get corrupted. It's only purpose is to monitor and record CCTV.

    Until two weeks ago this duty was carried out faultlessly 24/7 by a Samsung NC10 notebook. The only reason for the changeover was because I want to take the Samsung abroad with me in July (it's smaller and lighter than any other laptop I own).
     
  11. Ze_Dude

    Ze_Dude

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    Sorry, my fonts are screwed up on this computer and I thought you were using a desktop. As laptops don't have power supply units, there is probably a component on the motherboard heating up after about 10 hours, and the computer shuts down to prevent damage. You should check that the cooling components are working properly and positioned properly.
     
  12. oldcelt

    oldcelt Thread Starter

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    As I said, I've fitted a brand new cooling fan and heatsink (with heat transfer compound, of course, under the heat sink). So, the heat control items should be pristine.
     
  13. Ze_Dude

    Ze_Dude

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    Not necessarily the CPU, it could be anything. I can't guess, as there are so many bits and bobs on a motherboard. Try taking out the motherboard. Does anything look discolored? Also, when it's starting up, press F8 repeatedly for a few seconds and disable "Automatic reboot on system failure". After 10 hours, it might be encountering a Blue Screen of Death, and if you disable the automatic reboot we can see it.
     
  14. DaveBurnett

    DaveBurnett Account Closed

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    Look in the windows/minidump folder for a dump and zip/post a couple
     
  15. oldcelt

    oldcelt Thread Starter

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    will do tomorrow - ta!
     
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