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Hp pavillion a705w will not boot up

Power is plugged in but no lights no noise no nothing have unplugged overnight and plugged back in and still nothing

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I had the same problem, I unplugged my computer to move it before it had fully powered down. It wouldn’t start and all I got was the flashing lights.

I asked a friend who suggested I remove the power to the motherboard then reinsert it while it’s hot. Here’s what I did. Unplug the computer. Touch something metal so you’re grounded and don’t create a static shock on the motherboard. Now GENTLY pull the 16pin wire harness off the motherboard. Now plug the computer power cord back in. Then GENTLY plug the motherboard back in. With any luck the fan will start up and the computer will begin booting up. It seems to be some type of problem where the power supply doesn’t recognize the motherboard so it doesn’t do anything until it “sees it”? Probably some type of a safety to prevent motherboard burnout?

Posted on May 26, 2009

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Your computers SMPS is at fault. Check with another smps. Still no result ... then mother board is faulty. Anyway you have to call a technician.

Posted on Dec 16, 2008

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Check the power supply..

Posted on Dec 16, 2008

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