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Unknown error My pc is over 5 years, few days ago, i have a unknown error. Once it's plug to power cable, it's starts to give few seconds continous short loud beeps, then continous (endless loops) of silent short beeps before i even press the power on button. Also, the Power Led is flashing faster than usual including the Power on button keep flashing green. After my power unit died out, i then got a new power supply, but still got the same problem. Even a new Hard drive, still a problem... My CPU and new Power Unit is working perfectly but i still can't find what's the problem is. I'm not even sure what's BIOS my system is using...

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  • 3 more comments 
  • Umiko Feb 17, 2009

    i don't think i need to replace my memory since i replace it 4 times just then...

    i don't know where's the video card is... ( i think i don't have one)

  • Umiko Feb 18, 2009

    i just switch around 2 of my DDR RAM...

    cooling fan is on.

    didn't try remove all unnecessary components yet
    which i try to do it later on, using my sibling's laptop atm.

  • Umiko Feb 18, 2009


    i try stick in 1 RAM at a time, and also in different slot, then done the same with other RAM, but still the same result.

    also i try with remove hard drive, unnecesary components still have the same problem.

    thought this might be useful:
    i played online game when it's nearly midnight, then all the sudden, it shutdown unexpected and restart itself then it give this unknown error.... i unplug the plug taht lead to power cable since it won't stop with the same beep sounds and it won't shutdown. plug it again, still the same problem, then 3rd time the system stop, due to the power unit stop working (since it is very old using it over 5 years~).

    Then get a new power unit which is 450 watts one, since my power unit was 250 watts,
    then i thought a while ago just yesterday night, does it happen using 20 pins or 24 pins? since it's does still work for my system but still have the same error.

    After i try with new power unit, i brought a new hard drive fixed perfectly and i don't see anything wrong with the new hard drive at all...

  • suckmykissez Feb 19, 2009

    yup, me 2

  • Umiko Feb 19, 2009


    my pc turn on by itself giving beep errors, then carries on with the same error and my monitor doesn't get the signal from my motherboard so i can't get to bios start up screen.

    and yes, my cooling fan and processor is on.

    but i have no idea what manufacturer/model/version is my motherboard is, check everywhere on the motherbard but i can't find it.


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  • 120 Answers

Re-seat Video card, replace memory.

Posted on Feb 17, 2009

  • 5 more comments 
  • ted dux Feb 17, 2009

    What did you replace the memory with?
    Is the cooling fan ON?

  • ted dux Feb 17, 2009

    remove all pci cards and hard drives, all unnecessary components.

  • ted dux Feb 18, 2009

    I figured that's what you did with RAM.
    Try with only ONE RAM Stick at a time, one is bad.

  • ted dux Feb 19, 2009

    Is it fixed?

    Can you enter bios?
    Set first boot item to cd:
    Boot with ubuntu live cd and run memtest from the start options.

  • ted dux Feb 19, 2009

    Is the cooling fan on PROCESSOR ON?

  • ted dux Feb 19, 2009

    At this stage you need to supply Mother Board Info such as manufacturer/model/version.

  • ted dux Feb 19, 2009

    At this stage you need to supply Mother Board Info such as manufacturer/model/revision #.


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