Question about MSI K8N Neo4-F Motherboard

1 Answer

On startup fans only run a second then stop

I've unplugged graphics card, memory, drives, etc, and the result is the same so the problem is the MB. Is there any further debug I can do or is it time to ship it off to MSI for out-of-warrenty repair?

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  • 3 more comments 
  • bongos292 Apr 16, 2009

    Perhaps my failure mode description was too brief. The fans stop, all lights go out, and it doesn't boot. I believe the PS has detected a short, probably in the MB, and has shut down.

  • bongos292 Apr 18, 2009

    To test power supply I followed the procedure at:
    It indicated the PS was OK.

  • Anonymous Apr 30, 2009

    I have the same problem. I believ the MB shorts out. It just shuts of and then acts like it's in hibernation however you can get it to stop flashing unless you turn off the power supply. It did this for a bout a week. Now only the fans run but the OS doesn't turn on.

  • kurtisckelle May 02, 2009

    Same problem here. Fans run for a second on startup and then the system shuts down. If I try to start again, nothing happens at all. After a few minutes, something resets and I go through the same senario; press start, a second of fans running, then shut-down. This used to happen occasionally and now is constant, so I cannot boot up the computer. Power supply and power switch checked out okay on the bench.

  • Dick
    Dick May 11, 2010

    Repair is not cost effective, replacement is the way to go. It would cost more to repair the board than purchasing another board, processor, and memory.



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I think this is fairly normal, most modern motherboards use thermistors to check the system temperature, (which windows then overrides) so on startup your fans will test for about a second and then turn off until the thermistor tells it the system is getting too hot ( I think this is called Acoustic management)

you should be able to bypass this in BIOS if you want, but as your system gets to windows those fans should kick in..

Posted on Apr 15, 2009

  • Gareth Cockram
    Gareth Cockram Apr 16, 2009

    This sounds like a faulty Power supply, I've had this on my own PC and replacing the Power supply did the trick for me



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