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Thread: motherboard turns on, but pc doesnt run

  1. #1
    Newbie ebeck's Avatar
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    Unhappy motherboard turns on, but pc doesnt run

    It doesnt do this everytime i start, and i cant seem to find anyone with this problem, sorry.

    when i turn the pc on, the power LED will flash and go out, then the motherboard fans turn on but nothing happens for a few seconds, after that i hear a horrible whining noise from my speakers. the only way to stop the board is to cut the power, is there a problem with the turn on lead im using, its just the ACC wire for the head unit i no longer use.

    Also, i can't eliminate the popping noise from my amps, i've tried running them from my ACC line without the computer, and from the 12 volt off the power supplyand i get the pop. Also, the turn on lead from my M2-ATX stops the pop but is only enough for one amp, the bass amp wont turn on with that setup. i've thought about those delays that turn the amps on, but i dont see what they would do differently that elliminates this.
    thanks for any help

  2. #2
    MySQL Error MatrixPC's Avatar
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    What is your pc spec? Maybe you are overloading the PSU.
    Did you try to boot it with regular AC PSU?
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  3. #3
    FLAC sama's Avatar
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    regarding the delay, why not get the M2 to amp out to power a relay, and use the output from the relay to power all your amps?

    are you sure you can't just wire the M2's amp line to both amps?

    noise from mobo might be down to flaky connection somewhere, like ram. take out and reinsert all your devices for safe measure.

  4. #4
    Newbie ebeck's Avatar
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    thanks for the replies, i actually did try to use the turnon lead to switch a relay, but it didnt work, my multimeter tells me there isnt enough power, or maybe i dont have the right relay. but either way, when i did trip the relay they still popped...

    I did power it from and AC osu in the house, it works fine everytime

    i have the same setup i've seen many people on here have, just the m10000 with 512 RAM a pioneer slim dvd drive, and a toshiba 80 GB hard drive.

    and that sounds like a good idea
    , im gonna go rip everything out and reinstall it

  5. #5
    FLAC sama's Avatar
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    Ah. I guess the m2 has a soft start. perhaps you could use some high value capacitors inline to the power on teh amps? this should cause the signal to start softly. you'll have to

    a: ask someone some more about this 'cos I'm not too sure!

    and

    b: get the right values if it's the right thing to do

  6. #6
    Newbie ebeck's Avatar
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    Ok, i took care of the AMP isuue, well at least i figured it out, the cheapo jensen amp that i bought to replace my head unit is doing this wierd thing where it goes into protect mode for a few seconds, and when it comes out of that it is making my subs pop, even when the audio cables are disconnected, so im not sure what im gonna do, but i now know how to stop it

    on the other hand, i was driving down the road and my pc went into hibernate today- right as i was testing my new gps reciever out. anyway, i run the turn on lead from the ACC line on my car, i checked the fuse and it was blown

    should my turn on lead pull more than 7.5 amps?

    im a bit slow when it comes to these things, i think this has something to do with why my mobo acts up every other time i turn it on....
    im counting on you guys-thanks for the help

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