Question about HP (152769-001) (152769001) 250-Watt Power Supply

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Flashing green light on power supplyonly fans come on at start up

I am not sure if my power supply has failed. when i try to start the computer only the fans come on and they speed up then slow down constantly. also the green light on the supply flashes.

HP tower media centre m7000

Can you help please

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Just open ur pc case replace the ram and all connections for 5 to 10 min clean dust inside pc and also clean ram and put back in to pc and restart i hope ur comp will be right back to normal!

Posted on Nov 11, 2011

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Posted on Jan 02, 2017

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2 Answers

Blinking green light


It is likely that the power supply is failing. It tries to start and powers up briefly then shuts down.

Oct 28, 2013 | Sony Grand WEGA KDF-60XS955 60" Rear...

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Green power supply light is flashing so power is getting to the computer, however the computer will not start from start button. Have removed case and tried ***** start button. Didn't work. Comput


Power getting to the computer/Power Supply?
Yeah.

Power Supply good? -> NO

A) IF ALL of the LED lights were on at once, they would use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts of power.

C) A typical Processor can use from 51 to 125 Watts of power.
Just depends on what Processor it is.

HP Pavilion a810n Desktop PC?
Uses an AMD Athlon 64 3300+ processor,
(Operates Up To a frequency rate of 2.4GHz)

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c00280647

http://en.wikipedia.org/wiki/List_of_amd_athlon_64_microprocessors#.22Newcastle.22_.28CG.2C_130_nm.29

Can use up to 89 Watts of power.

Your Power Supply doesn't even have enough power to spin fans, much less start the Processor.

Want to test the Power Supply? Have a multimeter?
No? Have a power supply you can borrow for a test unit?
KNOWN to be good, and Compatible?

For additional questions please post in a Comment.
Regards,
joecoolvette

Aug 05, 2012 | HP Computers & Internet

2 Answers

Power supply unit starts (fan running) but computer does not....


Try swapping out the ram 1 at a time, making sure there is one memory piece there while testing. If no! check hard drive for activity.

Mar 14, 2012 | HP Pavilion a1102n PC Desktop

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My computer won't start. Power supply (ttgi 450ss) has a blinking green light and the power supply fan starts when plugged in. Motherboard (asus m2npv-vm) has a green light illuminated between the pci...


See if you plugged in the 4 pin power connector on the motherboard besides the main power connection on the power supply (usually black colored and its a plastic 4 pin connector)

Try another power supply if all else fails. If new power supply does not work with this unit then its a motherboard which is blown and motherboard needs replacing.

Hope this helps

Mar 16, 2010 | TTGI SUPER FLOWER 450W quad fan switching...

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Gateway 507gr wont power on but looks like ps unit is good


Make sure you are plugging in your P.S. to Motherboard properly. This can happen if you are off by one pin on a 20 pin Supply on a 24 pin Motherboard. If you never opened the case and it just started happening, maybe one of your cards came out of its slot or your CPU Fan is not running.

Nov 06, 2009 | Gateway 507GR PC Desktop

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Yellow light flashes and Fan doesnt start


I think it may be a problem with the motherboard cause the power light should be green from what I remember. The fan isn't even turning on either which is very suspicious. Try another power supply if you have one handy and if that fails then the motherboard is bad. Even if your fan was bad, you would normally get video anyway before a warning message about the fan would come up.

May 08, 2009 | Dell Dimension E310 PC Desktop

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HP Pavilion A767C Computer. Power light flashes when plugged in. Power button on front does not turn PC on (or fan). Power supply light solid green when all components are disconnected. Connected one at a...


I would check your fans first , a failed cpu fan will cause the computer to overheat and not start.then cables, add-in cards and memory to be sure ones not halfway in it's slot.. then i would suspect the power supply, they can be missing power on a rail and still have a light on the back. you can buy a power supply tester at tigerdirect for 20 dollars. once all this is checked , i would look to the motherboard..
hope this helps in the decision making process..
Regards.

Oct 29, 2008 | HP Computers & Internet

2 Answers

Won't Start


BLOWN YOUR FUSE NEED NEW FUSE IN THE POWER SUPPLY

Jun 30, 2008 | Sony VAIO RB30C (VGCRB30) PC Desktop

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Pover up trouble


sounds like something is drawing down on your 12 volt supply drives or on board regulators. Try it without the drives connectged, and see if you can get the system to boot up(you'll just get a notice that your drives are unavailable, but you'll already know that, right?

got backup for your Dell?

Feb 15, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

34 Answers

Power Green Light Flashing HP Desk Top PC m7250n


During a power outage their is a surge when power come back on the grid (surge can be caused by lighting strikes akso). This surge trips the internal procters inside the power supply to protect the Mother Board, hard drive, processor and fans and any device that pulls wattage from the power supply. Since all these power using devices are trying to pull power at the same time to boot the computer back up one ends up with a loop of surge thrugh the power supply with a protective trip, reset, surge again and trip again. This will continue in this loop as the computer is trying to boot all the devices at one time (Mobo, Hd, processor, cooling fans and other devices). Simoly, more power wattage is being demanded than the protectors will allow at one time causing a protective shutdown followed by a restart followe by a protective shutdown in a continious loop.
The normall sequence for a boot is to boot the board, processor and fans followed by a boot of the hard drive, and other boot devices once the board is energised, NOT all devices at the same time, as this results in an overload and trips the protectors. This protective loop is indicated by the blinking light as the power is turned on and then shut down for protection as the wattage pull is over the demand that the protectors will allow.
Blinking light indictes you are in the protective loop.
SOLUTION: 1. Disconnect the Mother Board connector, with the computer unplugged, this will allow the power supply to reset at maximum wattage upon reboot.
2. Disconnect the Hard Drive power connector and ay boot device power supply cables, this will allow the Mother Board, processors and fans to boot without an overload of the protector inside the power supply.
3. Plug in the computer and the indicator light will be solid green indicating that it is reset and out of the loop.
4. With the computer pluged in and the Power Supply fully energised, plug in the Mother Board. The computer will now boot, and the processor fan will come on and the cooling fans.
5. After computer has rebooted, shut the computer back down and connect the Hard Drive power cable and any other power cablis that were unplugged.
6. Reboot with all cables connected and you are up and running again.

POWER SUPPLIES HAVE AN INDICATOR LIGHT FOR A REASON.
REMBER - BLINKING LIGHT IS AN OVERLOAD OF THE PROTECTORS AND ELLIMINATING THE OVERLOAD SOLVES THE PROBLEM AND THAT THE POWER SUPPLY IS WORKING AND CONVERTING POWER.
NO LIGHT MEANS NO POWER OUTPUT AND THAT INDICATES THE POWER SUPPLY IS NOT FUNCTIONING AND NEEDS REPLACED.

Hope this helps everone with power outages and lightining strikes. It is a rather common problem and can also occure when building a computer and one missmatches the power supply with the board wattage needs. If the board wattage needs are greater than the power supply output you will get stuck in a potective loop eventually. WHEN BUILDING A COMPUTER ALWAYS MAKE SURE THE POWER SUPPLY CAN PRODUCE MORE WATTAGE THAN YOU CAN CONSUME AT THE MAXAMUM LOAD.
Have a great computing experiense.

Jan 13, 2008 | HP Media Center m7250n (ED842AA) PC...

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