Question about HP Pavilion a420n PC Desktop

10 Answers

Computer will not power on

I'm rehooking up a computer for a friend they moved from one place to another and when i hooked everything back up and try to turn it on the printer,monter,and cable modem all powered up but the tower to HP pavilion A430N would not power no light indicates power to it but below the power cord in back of tower is a green light that keeps flashing  i kept hitting power button and no action in it at all the fans dont come on or nothing please help thanks im not sure if the product is correct they have A430N system DQ176A all i know

Posted by on

  • 11 more comments 
  • BrianS Nov 02, 2007

    bad power supply i tried the first steps didn't work no fans came on or nothing 40 bucks for power supply wasn't nothing thanks

  • BrianS Nov 07, 2007

    bad power supply i tried the first steps didn't work no fans came on or nothing 40 bucks for power supply wasn't nothing thanks

  • Anonymous Nov 27, 2007

    all powered up but the tower to HP pavilion A430N would not power no
    light indicates power to it but below the power cord in back of tower
    is a green light that keeps flashing i kept hitting power button and
    no action in it at all the fans didn't come on. I disconnected the power cord waited 5 seconds and pressed the start button, still nothing. I flipped the red voltage switch over and back to 115v and still nothing.

  • Althea88 Dec 17, 2007

    I have the same problem exactly and have tried all the suggestions from HP website. I moved my computer from one floor of my house to another-didn't even leave the house. I have opened it up unhooked the power hooked it back up still same no power and light just flashes on power supply in back. I have tried the five second hole the button with everything unhooked I have tried the switch in the back for five seconds. I have tried all of the fixes reccomend here short of purchasing a new power supply, which I have already read does not solve this issue. Can someone help?

  • hail tom Jan 07, 2008

    hp "disconnect and hold the button in" steps not working. a430n computer is plugged into an APC 1000VA UPS. green light still blinking. power outage occurred and I turned computer off using normal shutdown Win XP. now it will not power back on. tried plugging into supply ahead of UPS...still nothing new. No more HP computers for me...there has been too many nagging problems with it (xp normally has difficultly shutting down, video cards act strangely, card reader ports slower than direct to camera, strange fan noises).

  • melissa01983 Jun 04, 2008

    Having same problem with my tower. Green light in back by power cord flashes but will not turn on. Power going to speakers, modem, monitor and printer but no fans or activity in tower. Is this a tower problem or an electrical outlet problem? TV, DVD and everything else work from that outlet. Tried different outlets and changing volts from red button below power cord, next to troublesome green light. Just moved and trying to figure what this could possibly be, have never seen this problem before.

  • Cglass Jun 14, 2008

    Green light on back flickers, but computer will not turn on, when start button on front is pressed. Had the same problem at the end of March and it didn't turn on for a few days and then when I pressed the start button all of a sudden it came on, but not this time.

  • brey1104 Nov 29, 2008

    i have no flashing green light now, the monitor and keyboard comes on but the fan is not running please help this was my husbands comp that past away he had everything stored on it

  • peacelove69 Jan 17, 2009

    this same problem is occuring with my computer....i have tried everything besides a new power supply and there is still nothing that seems to be working...

    only the lights on my comp. turn on and the monitor and keyboard lights are flashing? please help

  • Anonymous Feb 19, 2009

    hiya my name is rich im having problems with my comp the fans come on and the green light is on at the back but im only getting the amber light on the front and im getting nothing on the screen can any one help me thanks

  • Anonymous Feb 26, 2009

    EXACTLY THE SAME PROBLEM AS THE REST. I WILL TRY ALL THE QUICK FIXES BEFORE I CHANGE THE POWER SUPPLY. I'LL GET BACK TO EVERYONE TO LET YOU KNOW WHAT HAPPENS.

  • aaronford May 11, 2010

    I did the motherboard test (disconnect 20 pin/jumper geen to black/reconnect power) and the fans and drives started normally. I am not in the position to replaced the mboard so for now I have a staple bent into a U jumpering the green to black. This will suffice until I get the pics off the hard drives.

  • Anonymous Mar 12, 2014

    Very old refurbished desktop worked great a couple of days ago but now when i turn it on there is nothing on the screeen. there is definately power going to the unit as the blue light on the tower is on. there is also a constant orange light that i never noticed before but could be wrong. it is a steady constant orange light. it does not blink at all. there are no error code beeps when i power up the computer. i have checked all cords and wires are plugged in correctly. my monitor has power to it as well. the indicator lights come on when i power it up but all my screen says is "no signal"...please help...any suggestions?

×

Ad

10 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 3 Answers

Regarding the blinking green light on power supply for hp a430n...I've had that happen as well when the computer is turned off for an extended period of time. It would not immediatly power up when plugged in to power. Hitting it and beating on the button didn't help either.

However, after calming down, I noticed that when I unplugged the computer that the light continues to blink, but gradually fades and goes out. So, I thought that since power supply holds a charge after being disconnected as can other components inside a computer that I would assume the converse: It needs to power up to "full charge" as well. In my case, I was right.

All I did was plug the computer in and leave it alone for about 20 to 30 minutes, go sit and cuss for a while. When I came back and checked it after that time, the front panel blue light was on and the green light on the power supply was glowing steady. The computer started right up! Thank goodness...stopped cussing.

If it hadn't, and I had tried all the resets listed above, I would have bought a new power supply too...but not this time!

Posted on Feb 15, 2008

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,601 Answers

Power supply light on or flashes Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure: CAUTION: This product contains components that are easily damaged by ElectroStatic Discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (like a conductive foam pad), and wear an ESD wrist strap that is connected to a grounded surface, like the metal frame of a PC.

  1. Disconnect everything from the computer, including the power cord.
  2. With the power cord disconnected , press the power button on the front of the computer for five seconds. Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps. NOTE: If the power supply fan makes an inconsistent grinding sound or stops and starts erratically, replace the power supply
  3. With the power cord removed, flip the red voltage selector switch to the opposite position. Wait about five seconds, and then switch the red voltage selector switch back to its original location. Ensure that the voltage selector switch is on the correct setting, 115V for North America. Performing this step ensures that the voltage switch is engaged and set correctly for your country/region.

Posted on Oct 22, 2007

  • Thomas Christopher
    Thomas Christopher Nov 01, 2007

    did this work?

  • Thomas Christopher
    Thomas Christopher Nov 06, 2007

    Did this work?
    Please post an answer so we can help you further.
    If it worked please rate this post as solved.
    Thanks,

×

Ad
  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

I had the same problem would not power up and the flashing green light under the power supply. i just unplugged the supply from the board and reattached it all and it fired right up. But I noticed the cpu fan kicks in real fast every once in a while and then goes back to normal. So it is probably a failing power supply

Posted on Sep 29, 2009

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Green blinking led light -- put in a new power supply and hp a430n is back running...using a cooler master 500w $60...I have added a 1GB memory module for $50 to the existing 512MB and that smooths out the hard drive use. also changed out the video card to a dual monitor unit. keep buying larger external drives to backup the 160GB....am i nickel and dime-ing myself?...unit is now 4yrs old.

Posted on Jan 11, 2008

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 3 Answers

Hi
My computer would not start after turning off to go on holiday.
Had a green flashing light on the power supply unit.
Just left it over night as suggested, with the power on, and the
next day the green light was on and the computer is workink ok?
Thanks to VoINbama suggestion

Posted on Jun 26, 2008

  • l e x x Dec 23, 2010

    I am a bit late with this comment.
    The problem returned.
    Decided to investigate. Removed power supply unit. Opened up PSU enclosure and inspected components. Found various electrolytic capacitors had failed, Indicated by their cases being swollen/belled out at the ends. Replaced powersupply unit problem solved.
    .

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a m7434n with the exact same problem. The problem happened when I replaced the disk drive. I found the cabling from the power supply to the motherboard bent in a way it was keeping the full connector seated properly. I removed the cable connection (wide one) from the power supply to the mother board and plugged in the AC cord and the light when solid green. Then unplugged the power cord and waited till the green lite died out, the plugged back into the motherboard and it worked.

Posted on Feb 01, 2010

Thanx guys. pcs have a lot of issues...

Posted on Jun 28, 2008

I am Althea88, I forgot my pwrd so I am guest for right now. On a scale of 1 to 10 I have the computer tech savvy about 5, with that said...I have changed my power supply up from a 300W to a 600W on my own-now my computer is back up and running-If you have this issue with no power and green light flashing my best advice is to change power supply first. This does not only happen with HP computers my parents have compaq and exact same thing happened to them and replaced power supply fixed their issue. Parents had friend install the supply for them-part and labor $65, I got supply $30 installed by self. Depending on brand you get and how big you go (W) price varies.

Posted on Jan 21, 2008

After 11 emails from HP they finally admitted that the power supply needed to be replaced, they offered to sell me a flat screen monitor to resolve my issue (yes I did say monitor), to which I said no thank you very much. My new power supply is on it's way to me from another reputable computer supply retailer and I am crossing my fingers this will resolve my issue too. My system is HP a824n, my mother also had the same issue with a Compaq, she took hers to a computer repair shop-$65 (power supply and install labor cost), a newer bigger power supply was installed and she is now back computing!
Buy and install a new power supply, that is my reccomendation on resolving this issue promptly.

Posted on Jan 11, 2008

  • samuelgore64 Oct 01, 2010

    hello replaces power supply get the same problem nothing happen,just doing the same when the old one was in it help

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Nope didn't work for me either

Posted on Dec 17, 2007

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Screen was very strange looking, with nothing but streaks. unhooked it from computer (Mac Pro), shut down computer, rehooked, turned on monitor, rebooted Mac (hooked to other monitor), which came up...


I would try this with PC first or another MAC to make sure it is not video card problems.
If it still bad you may have to inspect the caps just like all failed VIEWSONIC as shown here.

Basic LCD monitor troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.

Oct 17, 2010 | ViewSonic VX2035WM LCD Monitor

2 Answers

Monitor no signal


Your monitor cable is not properly connected to your computer, make sure you have it connected to the correct output on the back of your computer. If it is connected, make sure it is connected securely, not loose and half-cocked at the connector. If that doesn't work, try another cable.

Sep 15, 2009 | Dell E151FPp 15" TFT LCD Flat Panel...

1 Answer

Moved computer to new location. rehooked all. monitor wont start


Without seeing your make or model on you monitor it is difficult to give you any advice.
But with that said.. If your monitor is a flat screen there is a power cord that plugs into the wall the cord is connected to a small box (power converter) out of the box is a small connector that goes into your monitor. It is small and you may have to turn you Monitor over to see exactly where it connects.

Your computer will work whether or not you have Internet service.

Sep 08, 2009 | Star Logic 17" LCD Monitor

1 Answer

2006 Chevy Tahoe Z71


when you hooked the battery back up did the post and the cable spark when they came to contact? is it possible you hooked it up wrong?

Jan 11, 2009 | 2006 Chevrolet Tahoe

1 Answer

No sound


make sure the speakers are plugged into the GREEN port on your sound card many times people plug it into the linei n or mic jack by accident.

Dec 30, 2008 | Logitech X-240 Computer Speakers

1 Answer

Wireless keyboard & mouse (S510) crashes my computer


Normal 0 Turn the mouse over and find the small rest/connect button on the bottom of the mouse and press it. This should connect the mouse to the receiver and work properly. If not, try pressing the receiver button and then press the button on the mouse. This should be done whenever you change batteries or glitch. Hope this helps you. Bud

Dec 29, 2008 | Logitech Cordless Desktop MX 5000 Laser

1 Answer

Hooking up dvd


I did not get an answer, but I am not interested in paying for premium assistance. I will keep trying, thanks.

Sep 21, 2008 | Emerson ET-20F7 19" TV

1 Answer

Computer Speakers


Try and plug your speakers into a friend's computer and check if they work. If they don't, then the speakers are fried, probably because of a voltage surge when the power went out. If they do work on your friend's computer then you most likely have a bad port on your computer because of the power surge.

Dec 14, 2007 | Cyber Acoustics CA-2016 Computer Speakers

3 Answers

Amp stopped working...


Has the amp been overheating lately? It's quite possible that the amp could have just blown. Smell around the outside of the amp for an electrical burnt smell. If available, see if a friend also has an amp hookup and try removing your amp and copnnecting to the friend's cables. That will tell you if it's a wiring problem or an amp problem.

Sep 13, 2006 | Kenwood KAC-9152D Car Audio Amplifier

Not finding what you are looking for?
HP Pavilion a420n PC Desktop Logo

15,959 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18425 Answers

pontelemon
pontelemon

Level 3 Expert

538 Answers

Alun Cox

Level 3 Expert

2678 Answers

Are you a HP Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...