Question about HP Pavilion a420n PC Desktop

1 Answer

Desktop E Machine will not power on.

I have a desktop E machine that suddenly won't power on. When the power button in front of the computer is pushed.. the power won't come on.

I opened the Mother Board and when the power cord is hooked-up.. There's a greenlight on the inside.

There are a bunch of family photos from past trips we've took saved on the computer. Please help me fix this problem. I'm able to go out and buy the things necessary to fix this problem. I just need to know what and how to do them.

Thank You for your time. Please let me know if you need any additional info. Thank You So Much.

Posted by on

  • Vern Haynes
    Vern Haynes May 11, 2010

    Are you trying to repair the PC yourself or do you just want to save the pictures that you mentioned?



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 38 Answers

It is very common that the power supplies in those fail, which is most likly your problem. However, you can do a few things first to test other things. And don't worry, your pictures are most likely still safe on your hard drive, i would not link the power on issue to fault your hard drive unless it was dont by a power spike.

One 'd thing to try is to bypass the switch, mostly they become intermittant before failing, but that is not always the case, I would only recommend doing this with the steady hands of a surgon, but you can find the leads from the power switch and where they connect to the board, remove it and use something matalic to bridge the exposed pins. BE VERY CAREFUL.bumping the wrong thing could be the end of your computer for sure.

Another common one is reseating the ram. Mostly when this is thefix, the computer will power on, but nothing will come on screen, it won't "post" but i have also seen it fix this issue of no power on at all.

The last thing i would recommend you try would be to reseat the processor. depending on the type, this could be diffucult, bending one of the many pins even slightly can be the end to your processor.

If none of these work, or you rather not attempt them yourself,you can remove your power supply and take it to a local shop for testing. if you ask them to see if you need a new one, they will most of the time test it for free because if it is bad then you'd have to buy a new one (most likly from them)

Good luck and safe testing!

Posted on Jan 13, 2009


1 Suggested Answer

  • 2 Answers

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

A 6ya expert can help you resolve that 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.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Nothing happens when I hit power button

If it uses the normal header pins for the front panel, trace the wire from the power switch back to the motherboard. Remove the connector and short the two power pins on the motherboard to see if it starts up.

Dec 07, 2013 | Acer Aspire E380 - Athlon 64 X2 4200+ 2.2...

2 Answers

The power button on my computer won't turn on the computer

if no any power indicator at the front and also the fan at the power supply as will as in the mother board, it was a power supply failure.

Nov 25, 2012 | eMachines EL133105 Desktop Computer with...

1 Answer

Turning on my computer by pressing the On/Off switch on front of desktop computer does not always turn machine one.

more likely the switch itself not retaining the on position
get to the switch and bridge the 2 wires to see it it stays on

Jul 21, 2017 | Dynex DX-400WPS 400-Watt Power Supply

1 Answer

Pc will not boot, just three beeps when i press power button

Your power supply unit (PSU) might be up the left. Cheap and easy to fix. Open the machine, the silver box inside the pc immediately behind where you plug in the external power supply is your PSU. Disconnect the various leads that connect it to the system and unscrew the various screws that keep it in place. Remove it, take it to your local computer shop and ask for one. Re-install is just the reverse of taking it out.

Nov 20, 2011 | E-Machines eMachines Desktop PC

1 Answer

My dell desktop won't start. when press the front panel button, computer won't start

check the power connections, if its okay change the power supply or smps

Jul 27, 2011 | Dell Dimension 3100 PC Desktop

1 Answer

Powerspec 6342 won't turn on

probably have a power supply or motherboard that is dead

Apr 08, 2010 | Micro Electronics PowerSpec 7805 PC...

1 Answer

I had a brief power outtage and now my computer will not cut back on. the light on the motherboard is green. My computer is demison 5100 desktop.

Hi there.
Reset all the surge protectors if you have any, remove the power cord from the back of the desktop for at least 10 mins, press the on/off button periodically to drain any residual power from the machine. After 10 mins plug the power cord in again and try to reboot the machine.

Good luck and thanks for using Fixya!!!

Mar 02, 2009 | Dell Computers & Internet

1 Answer

Emachine desktop power switch is shot

I would still try to replace the power supply first,before replacing the motherboard.In 80% cases that you are describing it is the power supply.
Hope this helps

Mar 24, 2008 | E-Machines eMachines Desktop PC

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

43 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18424 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

538 Answers

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

Answer questions

Manuals & User Guides