Question about Abit KN9-SLI Motherboard

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Power Up I recently installed an ABIT KN9 SLI mobo and applied power. The fans and indicators came on for about five seconds and the green 5VSB LED was extinguished at that time. I did try another power supply to no avail. All suggestions from anyone are more than welcome. Bob

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  • stlcard12 Sep 01, 2007

    Same results.

    Bob

  • stlcard12 Sep 01, 2007

    It will not come on until I power down and wait for the VCC LED and LED_SLI_PWR1 LEDs to exstinguish.

    Bob

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So after 5 seconds it won't come on again at all, or it runs for 5 seconds each time? What else do you have running on this computer? I'd suggest disconnecting all non-essential devices (hard drives, all but one memory chip, any expansion cards other than video) - if one of them has a short, they can pull down the power supply (regardless of the condition) and cause it to shut off exactly as you've explained. Let me know if that makes a difference (it obviously won't boot without a hard drive, but it will get far enough to see if that's the problem). If that doesn't make a difference, let me know and we'll try something else.

Posted on Sep 01, 2007

  • John Goodman Sep 01, 2007

    I'm assuming the power supply is rated for the board and processor you're using. Did you make sure you aren't using too weak of a power supply? I'll write the rest of this assuming you have made sure of that.

    Well, you've ruled out the power supply, and any peripherals. At this point it would either have to be your video card (if it's not on board), your memory (whatever stick you left in there) or the motherboard/processor itself. I list those two together because once one goes bad, it often burns out the other. It's generally a bad idea to replace one without replacing both, as you run a high risk of damaging your new motherboard with your old processor, or vice versa.

    Do you have a different, known working memory stick and video card (if it has one) you can swap out? Assuming those don't fix it, you'll want to get that board replaced.

    If it's newly purchased, you should be able to get whoever you purchased it from to replace it. Otherwise, you're going to just have to replace them yourself. There's really no repairing a motherboard or processor on your own, unless you have an electronics degree, schematics on the board, and REALLY know what you're doing. And even then, it's iffy.

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