Question about HP Pavilion a1140n (PX774AA) PC Desktop

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My hp pavillion a 1140n desktop will not power up. I already changed the power supply. No luck

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  • Jackie Roberts May 11, 2010

    Does the computer do anything at all. Also was the new power supply a switching power supply, if so is it connected to the switch?

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Just for giggles, if you open the tower and look closely at the bottom right side of your motherboard there should be wires there. the wires themselves shouls be labelled like led light, reset and so forth, now if you look at the motherboard were these are located there should be labels there for each wire. make sure they are all connected and didnt come off for the sake of coming off because they only slide on, make sure everything is in the right place coming from the power button of the front of the tower.
i had the same problem and the main power slipped off somehow, and thats all it was, just the one wire

hope it helps you

Posted on Jul 01, 2009

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Posted on Jan 02, 2017

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