Question about HP Bestec ATX-250-12ZD 250w HP Pavillion Zinfandel Power Supply Part 5187-1098 (ATX25012ZD) Power Supply

1 Answer

Power supply light flashing.

Computer won't start up./HP Pavillion a000/. If I unplug PSU cable from the mather board I get steadi light on PSU. After plug in it back my computer start working normaly. What is the problem ?
Thanks. Iavor , PA.

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  • rtafari Nov 21, 2008

    wont boot green led falshing replace power supply or is there a reset button?

  • blm104 Jan 21, 2009

    HP m1160n Media Center PC

    Bestec ATX-250-12Z rev D2 power supply

    Asus K8S-LA motherboard

    I had to do some electrical work in my office so I turned off the circuit breaker. When I turned it back on I assume I got a power surge...now my PC won't turn on. Power supply light flashes. I unplugged the motherboard connector and the PS light stays on steady. I plug the PS connector back into the MB and the light flashes again, PC still won't turn on. I also tried resetting the CMOS (moved the jumper over, etc.). Is this a PS problem or a motherboard problem?

  • billh1 Mar 29, 2009

    hp a564n - local power outage - computer was plugged into a UPS. Same day computer would not turn on. Green power supply light flashing. Unplug mother board and light is steady. Replug mother board and light flashes - computer still will not turn on. Question the same mother board or power supply?



    bill_hudson@msn.com

  • swatson9 Apr 20, 2009

    same thing, green light on it just blinks at me. No idea why. Wonder if there is a fuze inside?



    swatson9@commspeed.net

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  • 136 Answers

Computer power supplys are modular replacement fixes. Better to replace the whole thing then try to repair.

Posted on Sep 24, 2008

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My computer wont start up. The power supply light flashes green when plugged in then red. But still nothing , can someone please help?


Try a Power Supply Unit (PSU) Reset: Unplug the electrical cable from the wall and the PSU (Back of Computer)
Move the red voltage selector to the opposite position it is in and then slide it back. If you live in the USA 120Vac to 220Vac back to 120Vac
After you have done this you can plug the power cable back into the PSU. Connect the power cable to the wall power. If the PSU is still serviceable it will no longer be blinking.
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When I put the plug into the PSU for my sony tower pc the green indicator light just keeps flashing. Now when I unplug the 24 pin connector from the mother board the light on the PSU is steady green. What...


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I have a yellow blinking light on the power supply of an HP model A000 Pavillion computer. What does that indicate?


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The machine won't power up. The green light on the PS flashes. What does this mean? If I disconnect the large plug from the mother board the green light will come on steady. Plugging it into the mother...


Can you tell if the flashing is a pattern. count the flashes ( long and short) in a cycle. This will provide an error code to hopefully discover the problem.
You may also try removing and reseating the RAM and Video card, blowing out the connectors with compressed air before reseating.. Also look closely at the components on MB for any signs of swelling, leaking, burning etc. I suspect the MB.

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Green light on power supply flashes rapidly when I plug the computer in. Computer will not power up at all (no cooling fans start, no lights illuminate and no beeps come from the unit). When the power...


if the cooling fan on your PSU power supply unit does'nt spin when you start your PSU is faulty if it does then
replace all the leads that attach to your hard drive including electrical extensions + IDE,SATA the ones that attach from your motherboard to hard drive
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Power supply light flashing green ,,, tried unplugging mother board still flashes green is it the power supply or the mother board?


Most computer testing facilities will test your current power supply for free. A replacement is very inexpensive to replace. Bestbuy, MicroCenter, small computer shops and buy replacemnent from Amazon.com, newegg.com.. Just make sure you have the correct information for your replacement. The model number on the power supply would be your best bet in most cases. Good luck and have a great day. I buy power supplies as low as $15 dollars Generic

Aug 14, 2010 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

1 Answer

Bad power supply?


Do yo have a volt meter or an atx psu tester?
you can check voltage to see

If a power supply is bad, your pc will turn off or/and turn on and turn off. As long as your system is running without and shut downs your good.

However if your pc is turing off, I would change it as soon as you can. basically what is happening, when you unplug everything there isn't much of a draw on power so the light remains steady, but when you plug devices in there is a draw and the PSU cannot deliver.

I hope this helps.

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