Question about HP Pavilion a810n (PP164AA) PC Desktop

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HP Pavilion a810n green light flashing but won't power on

Green power supply light flashing , but computer will not turn on. I have taken the front casing off and tried the power button that way, and still nothing. I have tried to "reset" cpu by pulling and replacing ribbon cables with power to computer, that didn't work, and it has always been foolproof way to start computer. Help?!

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  • jleighkelley
    jleighkelley Aug 08, 2012

    Nope, the hard drive was fried.

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1 Answer

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  • 176 Answers

It sounds like power supply problem

Posted on Aug 06, 2012

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Hav a pavilion a510n HP

I had a similar problem. Moved a 4-year-old desktop. Got the flashing light and no start. Quick fix is to unplug unit, open up case and unplug the large power connector on the motherboard. (On mine this is marked P1 and has a lock tab on one side that must be held in while unplugging.) Plug the 110-volt power and THEN plug the connector back into the motherboard. Button the case back up and all will be well until the next time you shut the power off to the computer.

The cause of this problem is likely that the battery on the motherboard is nearly dead. The flashing light is a warning to replace the battery. (It would have been nice if they would have put this into the user manual.) When you disconnect the power as described above, you interrupt the low-battery circuit. Replace the battery and all should be well.

Posted on Dec 02, 2008

siawolf
  • 749 Answers

SOURCE: HP Pavilion A767C Computer. Power

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.

Posted on Oct 29, 2008

jtuckerj
  • 59 Answers

SOURCE: HP computer doesn't turn on

Your power supply is bad--you will need to replace. I suggest looking at tigerdiect for a replacement.

Posted on Dec 12, 2008

  • 1 Answer

SOURCE: i had a powercut, when power returned, computer would not boot

what you have to is to unlplug the cord then cut the computer on

Posted on Feb 14, 2010

mrninja
  • 600 Answers

SOURCE: my "hp pavilion a220n" won't

Check all wires for loose connections--- if the memory was wrong or something, it would still attempt to boot but stop during the POST and start to beep

Posted on Dec 23, 2010

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Hello,

Please try the following:
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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.
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joecoolvette

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The green LED light at the back of the Power Supply, is now a diagnostic LED light.

Tells you the Power Supply is bad.

HP Support > Pavilion a1020n Desktop PC > Main Support page,

http://h10025.www1.hp.com/ewfrf/wc/product?product=459880&lc=en&cc=us&dlc=en&lang=en&cc=us

Solve a problem > Start-up / Shutdown / Power >
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Scroll down. Click on the + sign to the left of the blue -
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(When the PC worked the green light stayed on constantly. You are correct)

Now,...
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3) I also suggest you remove all ram memory modules, ('Stick'), and clean their gold plated contact pins, with an eraser.
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{By the by. Did you or your father live in K.C.K, (USA), and does the name Philip B., ring a bell? }

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