Mobo Or Psu dead?

Discussion in 'CPU, Motherboards and Memory' started by barret88, Dec 6, 2005.

  1. barret88

    barret88 Geek Trainee

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    Ok so I have purchased a new mobo for my p4 2.4ghz cpu. A friend gave me a 350watt psu which is fairly new and worked on my old machine. Every single spec. matches up with everything I have plugged up, even the pwr switch, leds and such but the thing won't turn on. I notice when I flip the power switch in the back, the cpu fan spins about a centimeter then stops. What could be the problem, psu bad?
     
  2. pelvis_3

    pelvis_3 HWF Member For Life

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    I would try another PSU in it to be sure!
     
  3. Matt555

    Matt555 iMod

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    Have you got another PSU to try it with?
     
  4. barret88

    barret88 Geek Trainee

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    I have no other power supplys at the moment, do all motherboards have a light that lights up on them when they have power?
     
  5. pelvis_3

    pelvis_3 HWF Member For Life

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    Not all do, but most recent ones namely from ABIT
     
  6. Matt555

    Matt555 iMod

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    Not all motherboards do no.
     
  7. Matt555

    Matt555 iMod

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    Have you tried it with only the Motherboard, CPU, RAM and Graphics (maybe even without graphics if your motherboard lets you boot without them - if it's onboard then graphics doesnt really matter)
    [ot]hehe pelvis_3, just beating me to every one :p[/ot]
     
  8. barret88

    barret88 Geek Trainee

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    ok I just tried doing what you said, this time when I hit the switch in the back to give it it power, the cpu fan spins for about 3 seconds then stops. Still wont turn on though.
     
  9. pelvis_3

    pelvis_3 HWF Member For Life

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    Do you have the ATX 12V power line lugged into your motherboard?
     
  10. barret88

    barret88 Geek Trainee

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    the one with 4 pins? yes.
     
  11. barret88

    barret88 Geek Trainee

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    My Aim name is my_wiretap if you have it.
     
  12. pelvis_3

    pelvis_3 HWF Member For Life

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    Try swithching the Power Switch pins around, although i don't think it'll help!
     
  13. Matt555

    Matt555 iMod

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    Switching pins won't help, it's a straight SPST switch meaning either way it's going to do the same thing, if it was a more advanced switch then it would make a difference, otherwise, it won't.
    Have you tried with only one stick of RAM if you have 2? then changing sticks to see what happens?
     
  14. barret88

    barret88 Geek Trainee

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    just tried that, did nothing.
     
  15. Matt555

    Matt555 iMod

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    What went wrong with your old motherboard?
    What are your full specs?
    What is the PSU make/model?
     
  16. barret88

    barret88 Geek Trainee

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    well, I got the power supply working and the computer will turn on, the problem now is that I get nothing on my monitor, I tried two different monitors. There is no video card plugged in either, I plug up to the onboard video port, I can't figure this out.
     

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