Question about HP Media Center m1080n (PC099A#ABA) PC Desktop

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Hav a pavilion a510n HP , the cpu will not start up, there is a green light on the back of the cpu flashing when it has power but when pushing the start button it will not start, monitor has power but nothing happening. Dont even get the blue light to flasjh or come on when pressing start

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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

  • thegoogle Feb 14, 2011

    worked! AZ-guy's explanation is perfect. if y need any help email me fpulak@gmail.com

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You have to check your power supply unit first, if the problem is not solved then you unplug every thing from *********** board except the processor and ram, if the processor fan is moving then one of the component is the culprit, otherwise your your motherboard is bad and need repair

Posted on Jun 06, 2008

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1 Answer

HP Pavilion a1020n will not power on.


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 >
(No Thanks) > Power management,

Scroll down. Click on the + sign to the left of the blue -
Power supply light is on or flashes

(When the PC worked the green light stayed on constantly. You are correct)

Now,...
1) Is the computer dirty inside? Need to know how to properly clean it?
2) Would you like to know the easy test, to see if the problem may be a $5 ATX power on switch, or the Power Supply?

3) I also suggest you remove all ram memory modules, ('Stick'), and clean their gold plated contact pins, with an eraser.
There is a proper procedure for this.

Post in a Comment if you wish to know.

Regards,
joecoolvette

{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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1 Answer

My HP desktop computer wont turn on, green light flashing in the back?


The green light flashing may indicate a damaged power source .. I suggest to check it or use another one just to see if the system boots up ..and after that order a new one only after you are sure this is the cause....when it plays dead .. the causes can be from the cpu .. or the cpu fan not working and this will keep it from boot .. or the motherboard itself .. even the ram memory must be checked but usually it starts and restarts in a loop when the ram is faulty .. and in other cases may have an amber light on the board.. so ..if there is no power the cause it is probably most likely the power source

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Bestec model atx 250 12z flashes green when hp pavilion a706n is powered on light on back blinks green and pc does not power on even after all cables are disconnected


Try these suggestions:

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