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Light on power supply blinks once than nothing, the computer (hp) will not turn on.  It has no responses, when I unplug the power supply from the computer and plug it into the wall it does the same thing the green light blinks once than stops.  This occurred after a power surge to the house.  The breaker was tripped and the computer was plugged directly into the wall.   Any help would be very welcome.

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Re: Light on power supply blinks once than nothing, the...

The power box is no good. get the numbers off it and look on ebay for a replacement or you can go to
you can find them cheep. most of the time when the box blows and the mother board go's too, I would get a motherbaord as well.

Posted on Dec 26, 2007

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We had a power outage and now my HP m1264n desktop computer will not start. The green light on the back is flashing, but nothing happens when I press the power button on the front. Could it be my power...

the green light on the power supply but it dosnt relay to the mother board,the first item I would nbe concerned with is that the power supply that is,unplug your computer open up the access panel on the tower,the largest plug from the power supply,going to the motherboard unplug it . the plug has a release on it pinch inward and pull up at the sametime this will relaese it, now plug in your computer to the wall power and if your power supply has a switch on it turn it on,also make sure the 240 110 volt switch it's a slide switch on the power supply is on 110 volts if your not in europeits 110 here in the usa, if the light fails to blink or even turn on its the fuse in the power supply,if the light comes on blinking the power supply needs more attention if the light stays on full the problem lyes beyond the power supplyI would guess the fuse is the problem,now youll find two of them within the case of the power supply hope this helps.

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I had lost power in my house & we had unplugged the computer. Now power back on in the house , we plugged the computer back in but the computer won't turn on. Only a green blinking light. We unplugged...

hi , if the computer was plug ed in while power went out and computer was on .you might of got a surge , in that case your power supply is out , its very easy to take off. open the case find the power supply unit dissconect the color coded wire clip from the mother board , also the ones on cd rom and hard drive once disconnected , there are 4 screws on the side of the power unit take those off and the power supply should slid out. next take it to best buy computer store . and they can match the power supply unit foe you its to get higher voltage power unit hope this helps

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make sure nothing is plugged in to your front card readers slots:
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The green blinking light can mean there is a problem with the power supply.

Try unplugging the computer from the wall, and turning on the pc on switch.

After a few minutes, try plugging it back in.

If that does not start things up, you may have a bad power supply.

If the power supply is bad, these models take standard power supplies. You should get an ATX 350Watt or higher power supply.

They are easy to replace, unplug the power from the wall, disconnect all the cables inside the computer. Unscrew the four phillips screws outside the back of the computer where the power supply is attached to the case.

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