Fans a blowing but nothin showin!

Discussion in 'Desktop & Laptop Computers Forum' started by Deepstack, Feb 2, 2009.

  1. Deepstack

    Deepstack
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    Just built my first audio prduction pc.... when i turn on the power the chassis fans, GPU fan, CPU cooler and 2 red LEDs on the GPU come on...then off... then on ... then off... and so on... its a bit of a ball ache.... is this a common problem with an easy fix?

    Bloody hope so!

    :suicide:
     
  2. EarthRod

    EarthRod
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    What's a GPU? Is that the power unit?

    If so, disconnect all the leads from the power unit and see if the LEDs still blink on and off.
     
    Last edited: Feb 2, 2009
  3. FireKracker

    FireKracker
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    Any chance of some details of motherboard, graphics card and power supply would help!
     
  4. Deepstack

    Deepstack
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    Ok heres the specs...

    MB- Asus P5Q
    RAM - Corsair CM2x1024-8500C5D
    GPU - Asus ATi HD4830
    PSU - Hiper HPU-4M630 Type M 670W
    CPU - Core 2 Duo E8500

    Just went over everythin with a tooth comb... now fans come on for bout 5 secs then it cuts out then a second later they come on and stay on but still nothin happnin... hope its not incompatible RAM :s


    p.s gpu is graphics
     
  5. John7

    John7
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    Check the specs for the RAM voltage and make sure the MoBo is set to the correct voltage
     
  6. EarthRod

    EarthRod
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    Any beeps from the PC speaker when first powering up? Is the motherboard LED lit (green or red)?
     
  7. FireKracker

    FireKracker
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    Cheers for the specs, makes identifying the problem somewhat easier!

    As you stated this machine is a 'self build', from that I would start right back at the beginning by removing all unnecessary components e.g
    - sound card (unless its on board)
    - graphics card (unless you don't have on board gfx)
    - CD/DVD ROM
    - remove one stick of memory

    So you end up with just a basic config
    - mobo,
    - CPU obviously
    - 1 stick of memory
    - Hard disk
    - keyboard & mouse

    Start by ensuring that nothing is shorting the motherboard out, a loose stand off or screw may of go lost somewhere in the case. If all is fine there ensure that the basic components are securely connected. Also check that you haven't connected the reset connector to the power-on connector that goes for other function buttons that you may have.

    If everything appears to be OK there then I would power up and enter the BIOS and reset the BIOS to its factory settings also remembering to choose on-board graphics if that option is available. Reboot the machine and then see what happens oh and report back!

    Hope that helps so far! :)
     
  8. Mumid

    Mumid
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    Furthur to the above, try removing the motherboard from the case and running it from your desk. Sounds like its either shorting out in your case or your memory isnt compatible.
     
  9. Deepstack

    Deepstack
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    Tried with one stick of RAM and with non essentials unplugged and its just powering the GPU fan, cpu fan, hardrive gets to speed then turns off after 5 seconds then comes back on but all the time nothing being displayed... theres no beep so it is failing the POST for some reason.

    All jumpers on the board are as they should be.

    The only mobo LED is green and is on...

    Cheers for the suggestions though guys... starting to get a bit miffed lol i'm sure i've not done anything wrong coz its not exactly rocket science to put a pc together haha.


    :suicide:
     
  10. Mumid

    Mumid
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    Try it out of the case mate
     
  11. andrewt9763

    andrewt9763
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    Sounds like a ram issue,have you set the correct voltage in the bios normally around 2.1 volts but check your ram speeds etc.The best thing to do is try the board with a 6400 stick at 800mhz if you can,alot of Asus boards have trouble booting with 8500 ram.If this fails follow advise to remove from case and try with just ram and vid card,note any beeps and refer to manual or Asus website.Try updating to latest bios etc.Go to the Asus forums for your board lots of help there.
     
  12. EarthRod

    EarthRod
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    CPU fan running and the green LED on the motherboard lit would indicate the PSU is OK.

    So it looks like the motherboard has a problem....and that could be anything....like the CPU not seated correctly in the socket.....or a jumper setting wrong....or the motherboard touching metal somewhere.....or you did'nt use an earth strap when assembling the motherboard components.
     
  13. FireKracker

    FireKracker
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    As somebody suggested, build the basic machine out of the case (to eliminate any possible shorting) and try the fore mentioned 'solutions' again. If this proves to be unsuccessful then if at all possible borrow some compatible RAM from a friend and try that. As 'Andrewt9763' stated "try try the board with a 6400 stick at 800mhz if you can, alot of Asus boards have trouble booting with 8500 RAM". I've read this somewhere before, worth considering.

    If trying other compatible RAM fails then I would be incluned to suggest that it's a motherboard issue, I'd contact whomever you purchased it from saying that you have a duff board and would like a replacement.
     
  14. Deepstack

    Deepstack
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    Turns out the CPU mustn't have been seated properly... its goin strong now... thanks for all the suggestions anyway people :D appreciate it!

    :clap:
     
  15. FireKracker

    FireKracker
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    Glad you got it sorted fella, just goes to show, even the most basic of things can be overlooked!
     

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