Question about HP Compaq Presario SR1230NX (PJ518AA) PC Desktop

9 Answers

Psu blinking green light, no power

Blinking green light on back of power supply and nothing works, psu is  atx-300-12eb3

Posted by on

  • 8 more comments 
  • Big Bat John Nov 03, 2007

    I have an HP Pavilion a847c Desktop PC. We shut the PC down to reorganize the workspace it sits on. We moved it and plugged it back in. Now, the PC will not turn on. The power supply has a blinking green light on the back. With the power cable off the PC the green light blinks slowly @ 1blink/sec. When it is plugged in the PC it blinks regularly @ 3blinks/sec.

  • KABrown Dec 16, 2007

    the power supply unit green light is blinking and the computer will not turn on. I have reseated all the connectors, replaced the CMOS battery.... no luck.

  • Mr_Rome Jan 18, 2008

    same here, check the PSU and it's working.



    i want to reuse the LCD if i can, anyone know any adapter or converter and where to buy it from. thanks in advance

  • biodoc Mar 24, 2008

    what does this blinking green light mean ior indicate

  • saveria Apr 05, 2008

    have a bestec atx-300-12EB witha blinking light and computer will not power up, is the power supply dead? Removed and replaced clock battery, did not help. I hear a clock "ticking" on motherboard

  • Anonymous Sep 27, 2008

    i have a compaq presario and some light on the back just blinks and it wOnt turn on my computer wat can i do?

  • anance Nov 26, 2008

    I had the same problem, did what "guest" advised, and it worked!
    awesome!

  • Anonymous Mar 14, 2009

    The Green light on the back of my computer is blinking but nothing turns on. When i unplug the power cord it still continues to blink slowly for about five minutes and I plug it back in and it won't turn fully green so i cant turn it on.

  • Anonymous Apr 13, 2009

    I just fixed a friends PC with the same problem... I really do not suggest trying plugging the mobo power cord in whilst the PSU is powered!

    If you remove the power lead from the mobo and connect together the green and any one black pin fromt he PSU, you will find that the PSU powers on. When you then connect it back into the mobo it works fine. However - if you remove power again for any reason (unplug the PC for example), the problem returns. Its almost as if the PSU thinks there is too much power being pulled and does not want to start.

    In the end you should replace teh PSU, I did and the problems do not return.

  • Anonymous May 17, 2009

    I used a simple piece of electrical wire (14 gauge) and did as the above poster described. I touched the ends of the wire to a green terminated wire on the PSU ATX adapter, and then touched it to a black termination. The PSU fan came on. I waited a few seconds, removed the wire, and plugged the ATX power connector back into the motherboard (while the PSU was still plugged in). Sure enough, everything worked again. It's a great temporary fix until you can get a new PSU.

×

Ad

9 Answers

  • Level 1:

    An expert who has achieved level 1.

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

I read all the solutions, followed the manufacturers instructions exactly, replaced the cmos battery and nothing solved the problem (blinking light on PSU after a power failure and no startup at all). I had ascertained that the PSU was intact by disconnecting all the PSU connections to drives and motherboard at which time the PSU LED stopped blinking and was constantly on.
Just before throwing my computer away I decided to follow the instructions listed by "guest" to unplug the power to the motherboard and then with the power supply back on to plug the cables back into the motherboard. No only did sparks not fly, but it started up and ran perfectly! Many thanks to "guest."

Posted on Sep 18, 2008

  • 1 more comment 
  • hasan2000 Jun 22, 2011

    Thanks. The "guest" solution fixed my PC, at least for now.

  • M88inc Sep 07, 2011

    My lite stayed and it stRted to reboot. Fans started then stopped after 1 sec. And then no lite. I unplugged power cord and pluvged back in lite on. Try to start Nd nothing, no lite. Did same and results were same. Nothing fires up now. Does anyone know what prob is? Lite stayed on til I plugged motherboard back in too. Did what guest said and above is what happened

  • M88inc Sep 07, 2011

    Could it be CMOS battery?

×

Ad
  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

I, too, simply opened the computer, unplugged the power cord from the motherboard and re-plugged it back in after a few seconds. Everything works now...

Posted on Jan 20, 2010

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.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 749 Answers

Try changing the CMOS battery, it might be a dead battery... it helps to trigger the motherboard system.

Posted on Oct 31, 2007

  • Patty Cross Nutt
    Patty Cross Nutt Jan 08, 2014

    No real computer smart for the items inside so How do you change the CMOS battery

×

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

OMG!!! We promised our daughter she could have the Compaq, and I took it upstairs but-- it wouldn't come on, and the green light on the back was blinking, as others have posted. I tried everything but nothing helped, and I almost had a heart attack. Then I found this site and tried as the "Guest" suggested (I know NOTHING about computers, so if I can do it, anyone can). I unplugged the large clip of wires leading from the power supply to the mother board, took a 6-inch piece of 12-gauge wire, put one end in against the green wire (I do know a little about wiring, which is why I was willing to try this-- "green" is the grounding wire) and the other end to where one of the black wires would connect when plugged into the mother board. I WORE LEATHER GLOVES, WHICH ARE AS GOOD AS ELECTRICIANS' GLOVES, AND HELD THE PIECE OF WIRE WITH INSULATED PLIERS. Then I plugged in the PC. Signs of life! I couldn't believe it!!! As soon as I pulled the wire away, the computer went dead again, but as "Guest" suggested, I then plugged the power supply wires back into the mother board, crossed my fingers, and pushed the power button on the front of the PC. Bingo. Incredible-- it works perfectly. From reading other posts, the problem will recur if I unplug the PC-- which I'm NOT going to do. By the way, all of this happened following a power outage-- as others online have said-- it must have fried the "ground" inside the computer somehow, and this method bypasses it. At any rate, many thanks to "Guest," I never could have fixed our comp w/out your post!!!

Posted on Jan 31, 2011

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

I used the blow dryer trick & unbelievably it worked...found this remedy here: http://talk19.wordpress.com/2008/01/13/hp-m7088d-power-supply-led-blinks-green/

Posted on Feb 12, 2013

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

I had the same problem today with my compaq presario sr1230. There were a lot of recent storms and the computer had been off a couple of times when I came home from work. I posted a question and looked at some of everybody's posts and am now at more of a peace with this. I too have no idea what is causing the problem but plugging in the avx power supply (20 prong) while the main power supply is plugged in simply works. Thanks everyone.

Posted on Jul 08, 2013

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

There's a fix for this - it requires you to be creative, but this is what I found oout with both my HP A847c PC's (both went bad almost at the same time:
on the Molex 24 pin connector there is 1 green wire (pin 16). make a split on this wire (aka connect a new wire to this one with a split clamb or however you want to do this). do the same on any of the black ones (common/ground) - Pin 15 for example. at this point in time put 2 wire nuts on the lines (strip .5 inch off at the end). leave all connectors connected to the board and devices. now the trick... plug in the power cord to the wall outlet. result blinking green light on the power supply. now take the wire nuts of the 2 wires and connect them for .5 seconds minimum.... PSU fan should turn on (if not then you WILL have a bad PSU). disconnect the 2 wires... put wire nuts back on... voila, the green light is now solid and you can use your PC again (power on/off will just work fine AS LONG AS you leave the Power Supply connected to a live power outlet. When you disconnect the power from the Power supply, you need to do the same steps again. What I personally did is open the power supply and connected 2 pieces of 22 guage wire to the green and black line and drilled a hole in the back of the power supply and stuck the wires out. this way you will not have to open the PC. I will put a push button on the wire.

What this does is: normally the motherboard - when pc is turned on - will shorten the Pin 16 (5V) to ground, signalling the Power Supply to turn on (and as it seems put the power supply in the correct mode, kind of booting the Pwoer supply). What actually is broken I don't know... motherboard or PSU... I think the PSU. although the new Power Supply now is Dead Dead :-(

I did replace the "vaulty" power supply with a new one and it did work. so I would guess just the "power supply boot up" is not working onymore.

hope this helps.

Posted on Jan 18, 2013

I had the same problem with my a450n. Every time I removed power from the unit ( throwing the switch on my power strip), it crapped out and could only be reset by pulling all of the connectors on the MB while the power supply was plugged in and unit was off. It turned out to be a bad power supply.

Posted on Dec 21, 2007

Ty, i did fix it by unplugging the psu from the motherboard  and re-plugging it back in, while ac cord was plugged in

Posted on Oct 31, 2007

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE:

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

Hp pavilion slimline power supply


you bringing a marginal part or connection back up a working state. when it cools or voltage drops it goes to the non working state. hp power supplies are not good to begin with. replacing it will fix it till that one also fails

May 23, 2017 | Computers & Internet

1 Answer

Computer will not start. No fans, hard drive or monitor motion at all. But, a green light on my motherboard blinks.


Out university has hhad a failure rate on antec 450w psu of 40-50% over 4 years (total number of pc:s with this psu was approx. 300). Check your motherboard with a known-to-be-good power supply.

Feb 17, 2011 | Antec Phantom 500 500W ATX Power Supply...

1 Answer

The green light is blinking on the supply unit but it not coming on or booting up , i need to know if the supply unit is bad


Close examination of your power supply may reveal if the psu is bad.

When the power supply is plug in ac socket the green indicator led inside the motherboard will lit steady green. See if by turning on the cpu you will see some sparks in the power supply connector attached to the motherboard. This is a clear indication of a bad or shorted psu.

You can also smell if there is a burning inside the psu.

See if the fan inside the psu is working if not then its a clear indication of a bad psu.

Using a multimeter if you have one measure the dc voltage coming from the supply connector. Insert the black probe to one of the black wires in the connector. And the red probe to the red wire in the connector. the reading should be +12VDC. Put the red probe to the red wire and it should read +5VDC. Any readings below this, means bad psu.

Measure also the output voltage when there is a load in the power supply. Connect a CD-ROM drive or hardisk and measure again the voltage. Dropping of voltage when put some loads is a clear indication of a bad power supply unit (psu).

I hope this will help you.
Thank you for using Fixya!

Jan 11, 2011 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer

Power is out, but the light in the back is blinking, does that mean the power supple is shot ????



Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

Jan 02, 2011 | Gateway Bestec ATX-300-12EB3 305w Power...

1 Answer

ATX-300-12Z was hit with a power surge (thought we had a surge protector). Green light on power supply blinking at 2X/second. No power at USB devices (or anywhere else.) PC was on when surge hit.


There were 2 Switching power supply circuit inside the ATX PSU. There's a Standy PWM circuit whichSupply +5V to the PWM IC of the Main PWM. Stand by pwm still working or insufficient voltage, lower than +5V. This is the reason you still have Green light. Check or replaced small filter capacitor around 100 MFD 16V, open resistor or shorted diode that was nearest of the PWM IC..
Watch out for charge voltage on big capacitors.

Rleo

Dec 30, 2010 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer

Hp pavilion a430n power supply is blinking


Look at this photo
(http://www.atxpowersupplies.com/images/300-watt-atx-power-supply-FSP-ATX-300GU-350w.gif)

Did you connect the p4 atx 12vx1 plug?
You may also need to connect the aux x1 plug on some models.

Mar 08, 2010 | HP Pavilion a430n PC Desktop

2 Answers

Power supply or motherboard problem?


Hi talissap,

The blinking light is telling you something about the PSU. First check any AC mains voltage select switches for proper setting. US should be 115. Second if you have a multimeter, you could test the PSU for voltage. Disconnect all power to all components. remove all components from the board including cpu, memory . Leave the PSU only plugged into the board. Press power. If the fan turns on then it's not the power supply. The brand power supply isn't the best, I've seen where you need to wait for 5-20 minutes for the blinking to stop, at which time it will fire up. Now, if it doesn't power up, then it's most likely the PSU.

Good Luck,

Mark

Dec 08, 2009 | Bestec (ATX-250-12E) 250-Watt Power Supply

2 Answers

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:

<a href="http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06788&cc=us&lc=en&dlc=en&product=427167&dlc=en&lang=en#bph06788_section_2" >Troubleshooting Power Supply Issues</a>

Nov 29, 2009 | HP Pavilion a706n PC Desktop

1 Answer

Bad power supply?


Do yo have a volt meter or an atx psu tester?
you can check voltage to see

If a power supply is bad, your pc will turn off or/and turn on and turn off. As long as your system is running without and shut downs your good.

However if your pc is turing off, I would change it as soon as you can. basically what is happening, when you unplug everything there isn't much of a draw on power so the light remains steady, but when you plug devices in there is a draw and the PSU cannot deliver.

I hope this helps.

Sep 07, 2009 | HP ATX-300-12Z, ATX-300-12Z Rev. CDR, HP...

2 Answers

ATX Bestec 1956F Power Supply Failure


sounds like your power supplie has not been switched on by *********** board.the fan will not turn on until power supplie is turned on by mb.as far as what is wrong there are several things i can think of.i would try resetting bios. It sounds like your power supplie is working and your motherboard could have a short.but i have no way to be sure without testing. I can however tell you how to perform a test on your power supplie.unplug the 20 or 24 pin connector from your mb. look for a green wire,and then locate the grey one.short these two together(you can use a paper clip or something).if it dosnt power up. your power supplie is bad.also do not short any other wires,and only touch the grey and green for a few seconds as this is not how it was intended to be powered on.

Mar 03, 2009 | Bestec ATX-1956F (ATX1956F) 200-Watt Power...

Not finding what you are looking for?
HP Compaq Presario SR1230NX (PJ518AA) PC Desktop Logo

17,121 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18429 Answers

Thomas F. Schneider

Level 3 Expert

2715 Answers

Alun Cox

Level 3 Expert

2679 Answers

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

Answer questions

Manuals & User Guides

Loading...