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No power to motherboard!

Discussion in 'PC hardware help' started by kenny2014, Feb 17, 2014.

  1. kenny2014

    kenny2014 Newbie

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    Hi my pc has just turned off and now it wont turn on, i have checked the psu and its perfectly fine, i have also check the front panel connectors, the 24pin connector is fully down and nothing...but if i put the connector 1/3 of the way in the fans come on put when i push it fully down it goes off, i have tried everything and still no luck, please help!! T.I.A

    my specs are:-
    msi g41tm-p31,
    intel celeron E3400 @ 2.60ghz,
    4gb ram,
    500gb hdd,
    320hdd,
    asus hd5450 graphic card.

    i think its telling me to upgrade my system..lol.. :)
     
  2. aldan

    aldan Active member

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    does the computer also boot up when you insert the connector 1/3 of the way?
     
  3. kenny2014

    kenny2014 Newbie

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    Hi yes the computer boots up all fans come on and cpu fan then when i push it all the way down it goes off. Then it wont come on.
     
  4. ddp

    ddp Moderator Staff Member

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    look at the silver top cans(capacitors) on the motherboard to see if any are domed or leaking brown stuff.
     
  5. kenny2014

    kenny2014 Newbie

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    i have triple checked all of them and there is no doming or leaking, there is no scorch mark on the mobo, no scratches or anything, its a complete mystery to me.
     
  6. ddp

    ddp Moderator Staff Member

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    disconnect all drives & cards except for videocard unless the board has onboard video. try clearing the cmos as have found that to work sometimes to kickstart a stubborn system. remove all ram to see if powers up or not.
     
  7. aldan

    aldan Active member

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    do you have another power supply to try as it sounds like the connection at the motherboard is problematic.hopefully its just the plug.
     
  8. 2oldGeek

    2oldGeek Active member

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    Clean the contacts and pins on the 24 pin connector... do a scrub/scratch job on the pins.

    sounds like dirt buildup on the 24 pins at the bottom if it works partially pushed down.
     
    Last edited: Feb 17, 2014
  9. kenny2014

    kenny2014 Newbie

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    I have cleared the cmos, i have removed all drive, video cards and ram, i have used 2 different psu's so i know its not that and i have cleaned all contacts and the pins, i have done absolutely everything. Its so annoying
     
  10. 2oldGeek

    2oldGeek Active member

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    push it down just far enough for it to work and drive a nail in it.. LOL
     
  11. kenny2014

    kenny2014 Newbie

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    I wish i could..lol ��
     
  12. aldan

    aldan Active member

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    it is starting to sound like the board has gone south.if you push the plug partway and the fans spin up that does not mean everything is necessarily getting power.if you have a defective component that hasnt got a good ground it may be feeding back thru another circuit.essentially trying to use a live circuit for a ground.sorry but its easier for me to understand than to explain.lol
     
  13. 2oldGeek

    2oldGeek Active member

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    Me too, I stopped explaining it years ago when I sold my Oscilloscope and stopped soldering parts on MOBOS. Now it's a plug and play, just replace it.lol
     
  14. ddp

    ddp Moderator Staff Member

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    kenny2014, try the board & psu outside of the case with just 1 stick of ram to see what happens.
    2oldGeek, i still solder motherboards & cards to fix them.
     
  15. 2oldGeek

    2oldGeek Active member

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    Yeah but I'm OLD!
     
  16. ddp

    ddp Moderator Staff Member

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    so!!!!
     
  17. 2oldGeek

    2oldGeek Active member

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    When you're as old as I, everything has dried up or leaks......
     
  18. ddp

    ddp Moderator Staff Member

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    & why does that stop you from soldering as maybe a bit of soldering will stop those leaks.
     
  19. 2oldGeek

    2oldGeek Active member

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    all the dripping cools the iron... end up with cold solder joints :(
     
  20. aldan

    aldan Active member

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    you speaking metaphorically here?
     

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