Question about Compaq Presario S4000NX (DF213AR) PC Desktop

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I turned on my computer which was working fine lastnight. I turned it on and no power but the power supply and the processer fan runs

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  • mike nasr May 11, 2010

    what you mean? does ur screen lights up?

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  • 186 Answers

You might had a power surge unplug it let it reset or have you provider send a refresh signal

Posted on May 01, 2010

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Posted on Jan 02, 2017

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1 Answer

Computer wont start, despite all components working, cpu looks corroded


Pat,

Usually you diagnose these by process of elimination. Get down to the bare bone mobo without anything but the processor, good RAM (switch out if you can with different ones), and Power Supply. Eliminate everything else, no cd, no floppy, no hdd, no video cards, no sound cards, no cards at all really.

More than likely it's a bad power supply. Take the power supply to your local computer shop and they should test it for you for free... don't let them charge you for it. If it's good then test the cpu.


Hope this helps :)

Sep 22, 2013 | Compaq Computers & Internet

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AB9 Pro motherboard


do this test this will tell you if your power supply is good or bad we will do the process of elimination ok.
How do I test if the power supply is bad?
Warning This test is for those with extensive electronics training. Do not try this if you do not have extensive electronics training. Make sure there is enough load connected to the power supply before testing ( at least motherboard and one hard drive)!
atxpin.jpg
atx2.jpg
ATX power connector layout isshown above. 5VSB constantly provides 5V power to the connector through pin 9. If you have a voltmeter, while the power supply fan does not turn on, you could identify which pin is pin 9. Normally there is a clip on the connector between pin 15 and 16. If one can identify pin 14 (the only green wire goes to pin 14), this is the power-on pin. Onee can use a piece of wire to short pin 14 and 15 (or any other black wired ground pin). If you power supply has power connected to it and power switch on the power supply is on, the fan should be turning by now. Otherwise, your power supply may have problem.

Dec 27, 2007 | Abit AB9 Pro Motherboard

1 Answer

Suddenly power failure ,when the power returning the pc switched ON the SMPS fan and PC also not working.


My advise to you is to never turn of your computer!
the constant start and stop put stress on your power supply not to mention dust build up and if not properly cleaned the startup process can cause a short which I've seen so many times.
I have a computer which is 8 years old I never wanted to turn it off but leaving for two weeks vacation I turn it off. On my return the startup it shorted yeah dust build up.I had to replace the power supply, still running now. (A warm drive is a happy drive)

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Emachine T5026 power supply ** FREE SHIPPNG ** (EM12EB324PIN) Power Supply: my cpu fan is running but at a low speed. When i t...


In my opinion you have a faulty power supply, replacing only the fan may not solve your problem. Try replacing the power supply.

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2 Answers

Hipro HP-d3057f3r computer power supply broken?


I have the same problem. I found this:

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=bph06788&product=12455#bph06788_section_2

  • Replace the side panel, plug in the power cord, and examine the light on the back of the power supply:
  • If the LED is on solid and is not flashing, the power supply is probably good and the problem is most likely caused by a defective component (processor, memory, PCI card) or a defective motherboard. Have the computer serviced, or remove the components and replace them, one at a time, to find and replace the defective component.

  • Aug 16, 2009 | Hi-Pro Computers & Internet

    1 Answer

    No light, sound nor green button


    maybe a lizard is die inside and shock your power supply circuit

    Jul 01, 2009 | RCA 36F530T 36" TV

    1 Answer

    Gateway 831gm not booting. Fans come on but no boot process.


    2 questions:
    When you say new motherboard do you mean an actual new motherboard or new to that machine, but came from another used model?
    When you say you tested the power supply do you mean with a voltmeter/ammeter or put it in another computer and it worked?
    I worked on several gateways with similar problems and it boiled down to motherboard issues.
    I tested it by replacing the power supply with a bigger (used) power supply and it worked great (for 1 time) and then put the other power supply back in to confirm my diagnosis and yep it wouldn't boot. The next morning I was going to run some virus/malware cleanup and installed the other (known good) power supply and it would not work. I tried all day to get it to boot and it did about twice in a 4 hour period. When it did run it would run great but any attempt to restart it would cause it to crash. No ryhme or reason, it would not fail the same way more than twice. Sometimes beeps, other times no beeps, sometimes it would start up with no video (could hear the Windows starting sounds) other times it would start up normal. I could let it sit and it would start or I could keep trying in sucession and it would eventually start. Some times the fans would slow down from a roar, sometimes they wouldn't. So with a known good power supply that had 150 more watts than the original I diagnosed it as a failed motherboard. But if you have put in a brand new motherboard then I would replace the power supply, because a bad power supply does not mean no power, just not enough power. Please post back and let us know what you find out.

    Mar 31, 2009 | Gateway 831GM PC Desktop

    1 Answer

    Computer does not turn on


    Check the switch of the power supply at the back (black button) First
    If the power supply fan doesn't work or cpu fan doesn't work
    Replace the power supply.

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    Oct 16, 2008 | Computers & Internet

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