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

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Power led flashing...

Computer won't boot up, the green light on the power supply on back of desktop just flashes.

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Re: Power led flashing...

The described problem might not be the Power Supply Unit, there are a number of different reasons that may cause this symptom. Consulting HP would be advisable.

Posted on Jan 30, 2006

Re: Power led flashing...

I have the same problem. I found this on HP's website. Give it a shot. I hope this works for you (and me).

Posted on Feb 23, 2008

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Hipro HP-d3057f3r computer power supply broken?

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    Flashing Green Light on Power BESTEC Power Supply

    Hi. NO, *********** board is not fried. I am not sure what the problem is but I do know how to fix it. It is usually casued by power outages (even if you have UPS supply).

    1. TAKE OUT THE ELECTRICITY LEAD TO THE COMPUTER. Look inside the computer and find the bunch of wires coming from the power supply unit (the box thing at the top with the fan and all those colouted wires!).

    2. Find where these wires run into a plastic connector and plug into the mother board. Unplug it.

    3. Now plug the electicity lead back into the computer. The light should now stay ON.

    4. Plug in the connector again... and boot up. Leave it run a while to convince it!

    5. Repeat this process if it does not work first time.

    This should fix your problem . It works for me when I get this problem.

    Friend in Spain

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    Flashing Green Light on Power BESTEC Power Supply

    This is an easy fix so here you go nice and simple:

    Problem: Your motherboard circuit has been cut.

    Causes: Power disconnected during operation. Power outage or short in the surge protector.

    Symptoms: Flashing green light on both motherboard and power supply. System will not power on.


    Step 1: Ensure that both the power supply and the motherboard lights are flashing green, not solid or off.
    Step 2: While the power is on, disconnect the power supply from the motherboard. This connection is the largest of the connections and should be listed as the 'P1' or 'Primary' power connection.

    Step 3: Wait until the green light on the motherboard stops flashing and check to ensure that the green light on the power supply is now solid. If it is not solid, disconnect the power to the power supply and wait until the light turns off completely. Then reconnect, it should be solid now.

    Step 4: While the power is on, reconnect the P1 connection to the motherboard and you should now see that the light on the motherboard is solid.

    Step 5: Power on your PC. The problem should not persist.

    Warnings: If the power supply light remains flashing after you have restored power to it while it is disconnected from the motherboard, it may be a system failure in the power supply itself requiring replacement. Always be careful when working with an active or live power machine.

    I hope this helped! Good luck!

    Jun 23, 2008 | Bestec (ATX-250-12E) 250-Watt Power Supply

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