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Computer cuts off

My computer (about four years old) was working fine and all of a sudden it started cutting off within seconds of powering up. I get to see the HP screen and then the power cuts off. It's been a few days...same thing keeps happening.
The light on the power switch lights up fine but cuts off with the pc.

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  • Fran  Alt
    Fran Alt Sep 22, 2008

    My grandson did all this for me and it still shut down. When he has time he promises to install a new power thingy. Yeah I know, my technical knowledge and vocab are amazing.

    Thank you very much for your input...I really know this works...but just not this time.

    Thanks again


  • Fran  Alt
    Fran Alt Nov 12, 2008

    I just gave up on that computer but still have it. My grandson put another power supply in but it was not new. It has been totally blown free of dust. It continues to come on for a moment and then switch off.

  • Marc Wiggins
    Marc Wiggins May 11, 2010

    ?1- do you hear the fans when you start? if the power supply fan or the processor cooling fans are not working correctly, it may be shutting down to prevent damage.
    ?2- Have you ever cleaned the inside of the PC? if you have pets, or live in a dusty enviroment, the inside may be full of fur,dust,etc. These can cause heat buildup which is bad for electronics. Remove the side panel on the PC and check the dust buildup. pay close attention to the fans on the power supply and processor. go buy 3-4 cans of compressed air from an electronics dealer/supplier. disconnect all cables(including power) and blow all debris away. If the processor fan looks nasty, take a philips screwdriver and remove the fan from the top of the chip.DO NOT REMOVE THE CHIP OR COOLING FINS ON IT!!! take note of the location and orientation of the power lead to the fan. Blow all debris from the cooling fins on the chip. clean the fan blades, on the chip and PS fans. make sure you reconnect the chip fan, clean up the mess and fire it up. If that doesn't solve it, provide make, model,Mfr.



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Simply replace the power supply with a working one to confirm power supply problem. If the power supply is the problem than ask your grandson to open the casing of the power supply unit and see if there are bulgy signs on the top of the capacitors, and replace them with the specific ones. This problems may arise because of defective components, it might be best to leave it to the technicians to do the repair. Hope it helps.

Posted on Nov 10, 2008


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