Question about Hi-Pro (HP-P401W) (HPP401W) Power Supply

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I have a HP Pavillian a527x with the Hipro HPD2537F3R Power Supply. I turn on the computer and it usually will boot okay but power goes off within a couple of minutes. Is the power supply the likely cause? Is there something else I can check? The fans seem to be running okay and it does not seem to be overheating that I can tell. Thanks! Lee Melton

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  • lmelton337 Sep 24, 2009

    Thanks for the suggestion but this just started happening out of the blue and it always happens now within the first couple of minutes even if I am trying to do something. When it happens now all the power goes out.



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  • 88 Answers

It sounds to me like your computer is set to hibernate. If it was the power supply the fan would not come on nor would the pc.

Posted on Sep 24, 2009


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I am looking for a schematic for a Dell Optiplex GX280 power supply. The supply is model HP-U2106F3.

I just replaced my GX280 power supply (mini-tower) with the following 400W for $30.

The only place I can think you will find an actual schematic for the PSU is from the manufacturer.

Feb 13, 2011 | Hi-Pro Refurbished HIPRO POWER SUPPLY FOR...

2 Answers

Desktop monitor port not working. processor, keyboard, mouse all powered on & working, you can hear it boot up. I use this with other computers, it works fine. monitor has power but goes to sleep. Is...

Ha, no kidding!
I just had a HP Pavilion a705w come in for repair at my shop!
Small world.

Okay, let's go with your theory that the power supply is okay, and the Processor is indeed operating.

Your theory is that the GPU on the motherboard isn't working.

No Signal on the monitor means No Video Signal.

The computer isn't sending out a video signal.

(The HP Pavilion a705w comes with Integrated Graphics.

Meaning the GPU is soldered to the motherboard.
Another term for Integrated Graphics is OnBoard graphics.
On the motherBoard.

GPU stands for Graphics Processing Unit.
A GPU can be soldered to the motherboard, {Integrated Graphics}, or soldered to a dedicated graphics adapter card.

Do you have a PCI graphics card around? Still have the installation disk also?
Computer unplugged from power, and observing anti-static precautions, plug it in, screw it down to the frame.
Connect the monitor to the graphics card. Plug the computer into power.
WAIT 1 minute. Turn the computer on. You may have bad graphics because you haven't installed the drivers off of the installation CD yet, but you should have graphics.

Don't have a PCI graphics card available, or no graphics showed up on the monitor?

Okay, then humor me for a moment.
Computer unplugged from power. Anti-static precautions implemented.
Take the ram memory module/s out, and clean the gold plated contact pins with a pencil eraser.

Start at the top of the pins, and brush going down towards the bottom.

Use air to clean off the eraser 'dust', then reinstall the ram.
Plug into power, wait 1 minute, turn the computer on.

Still no?

Have another known, working power supply around, that is an ATX power supply, has at least 250 watts, and has the proper power cables?
I'd like you to use it for a test.

No spare power supply?
Do you have a multimeter?

It's time to check the power out of that power supply.

1) Orange insulated wires are 3.3 Volts
2) Red wires are 5 Volts
3) Yellow wires are 12 Volts
4) ANY Black wire is a Ground wire.

The Positive (Red) lead goes to the power wire, the Negative (Black) lead goes to a Ground wire.
Multimeter is set to the 50 Volt DC scale.

(Auto parts stores sell economically priced multimeter's for around $10 to $15)

Back to your statements in your added comment.

At first it could have been something as simple as the Ethernet card was bad, or the onboard Ethernet was bad.

However, it could be that the motherboard has another issue, and one by one, the motherboards features are going downhill.
No internet. Now no graphics.
Could be this,

I still think the first place to check is the power supply.
It's a cheap quality Bestec power supply.
The Electrolytic Capacitors seem to be the first components that fail in these power supply's.

However, if the computer was dirty inside, as well as the power supply, this could also make a power supply fail.

I've stated what a weak voltage power rail would do. Not enough power to turn the Processor on.
What I haven't stated is that the two main problems with a computer is,

1) The computer is dirty inside, as well as the power supply.
'Kills' power supply's and motherboards.

2) Power supply's are the second item. A pre-built computer manufacturer typically installs a cheap quality power supply.
Saves them money.

Bestec, HiPro, and Delta, are three power supply manufacturers HP uses a lot.
Cheap quality components are used inside.

Mar 08, 2010 | Computers & Internet

1 Answer

The LED on my HIPRO D3057F3R power supply is illuminated but the fan does not run. Does this mean that the power supply is bad?

Yes, it does.
More than likely Electrolytic Capacitors, have gone bad in the power supply.

Electrolytic Capacitors are used in the Input, and Output stage of the HiPro power supply, as Filters.

In the Input stage they filter the incoming AC voltage.
In the Output stage they filter the rectified AC.

(AC is rectified into DC. The capacitors are filtering DC at this point.
AC = Alternating Current
DC = Direct Current
A flashlight battery is an example of stored DC)

The HiPro power supply you have produces three main voltages. Three voltage Rails.
A.3.3 Volts
B.5 Volts
C.12 Volts

When Electrolytic Capacitors go bad, or are failing, there is a weak voltage rail.

HiPro power supply's are cheaply mad.
1.The wiring is too small. (The gauge of the wire is below standards)

2.The Electrolytic Capacitors are of low quality.

3.The rectifier bridge has cheap diodes, and too small of a heatsink.

I could go on, and on.

When you have a power supply with a weak voltage rail, there is not enough power for the Processor.

1.ALL the lights use less than 1 Watt.
2.EACH fan uses 2 to 3 Watts.
3.A typical Processor can use 55 to 125 Watts!
[Depends on what processor it is.

This is why lights - light, and sometimes fan's will spin, but the computer won't run.
Not enough power for the Processor.

Replace the power supply.

Viewing this link,

,you can see the HiPro D3057FR3 power supply has just the usual ATX shape, and size.
The ATX 'Form Factor' power supply, is used in approximately 90 percent of computer towers.

[Form Factor usually denotes towards a motherboard. An ATX form factor motherboard is 9.6 inches by 12 inches. Form Factor means the size, and shape.
The Form Factor designation, has been used towards certain hardware parts in a computer, as well as the computer case, but this is erroneously used. It does make it easier to identify with, though. That's why I used it here]

Point I'm getting to?
1.See if you have another Known, GOOD, ATX power supply to use for a test. Test my statements above before you go out, and buy another power supply.

Do you have another computer that has a good power supply, but may have other issues, that you can borrow the power supply out of, to use for a test?

Another thing. This manufacturer overstates the actual rated Wattage. The actual wattage is more like 70 percent of what is stated.
They state 300 Watts - Maximum, but in reality it is more like 210 Watts.

It is for this reason, and the reason that components used in the above power supply are cheap, that I would recommend buying a different power supply, than buying another HiPro.

(Therefore,.NO, I do not recommend the one in the link above, as a direct replacement)

What power supply that fits your needs would I recommend, that is a decent quality power supply, and won't break the bank?

This one,

OCZ StealthXStream 400 Watt.
Because it has 80 percent of the true rated wattage.
320 Watts actual.
Because it is reliable.
Because it has all the power cables you need.
Because it is $28 USD after the rebate.

I'm sticking my neck out recommending a particular power supply here, as this goes against our TOS, but if you have no background in this area, how are you going to know what to look for?

I am not recommending the website. But I have used them repeatedly, and always to my satifaction.

Any questions?

Nov 27, 2009 | Hi-Pro (HPP303W) 300-Watt Power Supply

1 Answer


A replacement is very inexpensive to replace. Bestbuy, MicroCenter, small computer shops and buy replacement from, 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

Nov 11, 2009 | HP Computers & Internet

1 Answer

I have a HIPRO HP-305 power supply. The green

the 4 pin connector is for cpu power. the hipro power supply are not very reliable.

Jun 14, 2017 | Hi-Pro (HP-P401W) (HPP401W) Power Supply

2 Answers

Hipro HP-d3057f3r computer power supply broken?

I have the same problem. I found this:

  • Replace the side panel, plug in the power cord, and examine the light on the back of the power supply:
  • If the LED is on solid and is not flashing, the power supply is probably good and the problem is most likely caused by a defective component (processor, memory, PCI card) or a defective motherboard. Have the computer serviced, or remove the components and replace them, one at a time, to find and replace the defective component.

  • Aug 16, 2009 | Hi-Pro Computers & Internet

    1 Answer

    When is the Hipro HP-A2007AE power supply cooling fan to be on?

    The fan should run constantly. It needs to be replaced. Otherwise the power supply will shut down when it gets hot. It can usually be replaced, but if the supply is cheap, just go out and get a new one.

    Mar 17, 2009 | Computers & Internet

    1 Answer

    Problems with hipro pc power supply

    sound like the regulator in the power supply is bad.
    need a new power supply.

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