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*Clean* pc works after blowing with compressed air - what could be the problem?

Discussion in 'General Hardware' started by Black Panther, Sep 15, 2008.

  1. Black Panther

    Black Panther Senior Moderator™ Staff Member

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    It's one of the work pc's, a bit old like 6 or 7 years. We're soon going to get a replacement for it, but I am still curious as to the cause of this problem:

    Like once a week, it freezes. It just freezes, I mean the monitor still shows the desktop or the accounts program. It doesn't BSOD. Mouse pointer doesn't move, ctrl-alt-del doesn't work.
    Then if you switch it off and on again, it doesn't boot. No beeps, no post, monitor remains on standby, and on the case both green and red leds remain on (normally only the green one remains on, the red one works during hdd activity).

    The solution is to open up the side and give it a good blow with compressed air.

    Now the pc is very clean inside (I use the compressed air on it like once a week) so it's not a dirt problem.
    Any idea what could be happening and why the compressed air makes it work again?
    Any clue as to failing hardware?

    According to speedfan the CPU idles at 56 degrees... it's an Athlon XP 2600+
    However I doubt that this problem is directly related to CPU overheating because even if I leave the pc unpowered for an hour or more and it cools down, it still doesn't boot unless I blow it with the compressed air.
    :confused:

    Thanks for any help.
     
    Last edited: Sep 15, 2008
  2. thraxed Guest

    Still trying to get over the fact of having windows installed for 6 to 7 years w/o having to reinstall...
     
  3. tigger

    tigger I'm the only one

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    Maybe its sussed out its the only way its ever going to get a blow job;)


    Weird thing though,could it be some loose connection or something,that the blast of air wiggles?
     
  4. xfire

    xfire

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    Looks like its the HDD.
    Tried changing it?
    If you don't have a replacement try a live CD after removing the HDD.
     
  5. SpookyWillow New Member

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    yeah just check all connections
     
  6. xubidoo

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    don't forget compressed air is pretty damn cold ,maybe it lowers the temps enough for it to boot ?
     
  7. Black Panther

    Black Panther Senior Moderator™ Staff Member

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    I've checked the connections endless times. Everything seems okay.

    Hmm that makes sense...
     
  8. Chryonn

    Chryonn

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    put a desk fan blowing on the side of the opened case, see if that does anything
     
  9. CrAsHnBuRnXp

    CrAsHnBuRnXp

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    Its either because of the CPU temp, hdd is going, or the windows install is FUBAR.
     
  10. twicksisted

    twicksisted

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    I say its probably a faulty PSU...
    I had a rig which would randomly lock up becuase of an old dodgy oem psu..

    Its not the HDD or it would boot up and just tell you that it cant find the disc after a lockup.
    Its also not going to be CPU temp becuase as you say its incredibly clean and realtemp has it clocked ok
     
  11. francis511

    francis511

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    Might be something to do with opening the case. This is like Clue sort of..
     
  12. TheMailMan78

    TheMailMan78 Big Member

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    I always work better after a good blow.
     
  13. erocker

    erocker Super Moderator Staff Member

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    The cpu temps are normal for that chip. I'm guessing it's the PSU as well. However, you could have some sort of miniscule foriegn object shorting something out that the compressed air alleviates when you use it. First I would suggest doing a complete teardown/cleaning/rebuild. You may have some greasy dust or something built up around some hidden component.
     
  14. KieranD

    KieranD

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    psu or hard drive failing, either or because they are quite old
     
  15. hat

    hat Enthusiast

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    re-seat the heatsink? after 6 or 7 years I could imagine all the TIM being pretty crusty and dry
     
    Crunching for Team TPU More than 25k PPD
  16. KieranD

    KieranD

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    it might be conductive TIM and its touching the mobo or something
     

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