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ATX power suply is not running

Its switching on and of

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  • Bradley Ward
    Bradley Ward May 11, 2010

    Did you recently upgrade a CD-rom or something, or have a thunderstorm in your area? An upgrade can cause a heavier pull on the power supply, and the wattage may not be enough to handle it. A lightning storm can run in on a modem, etc, even if your system is isolated with a surge suppressor or UPS.


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Check your connections first and if the connections are good between the power cord and the motherboard then your power supply is bad or you have a bad fan. If you haven't left it on for any length of time and the fan is bad you can get away with replacing the fan but if you have a fan that's been going out more than likely you've shortened the life of the power supply too. Also if you were working inside the case you may have a loose connection by the power button.

Posted on Jun 30, 2009

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