SMPS fan is not running but motherboard is getting power


  1. soaef
    Posts : 13
    Windows 7 Ultimate 32 Bit
       New #1

    SMPS fan is not running but motherboard is getting power


    Hello

    Yesterday my PC shutdown ever 2-3 Hours without any reason.
    So I decided to check it what's the problem ,so I just clean the RAM shot and remove the dirt from the case.
    An I try to run my PC without closing the case,So when I turn on the power ,My motherboard is getting power signal(green light ) and when I start my PC ,my CPU fan start running but my SMPS fan is not running also I an not getting any display on my screen , also my hard disk light stop working .
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  3. RogerR
    Posts : 607
    7 x64 Ultimate
       New #2

    soaef said:
    Hello

    Yesterday my PC shutdown ever 2-3 Hours without any reason.
    So I decided to check it what's the problem ,so I just clean the RAM shot and remove the dirt from the case.
    An I try to run my PC without closing the case,So when I turn on the power ,My motherboard is getting power signal(green light ) and when I start my PC ,my CPU fan start running but my SMPS fan is not running also I an not getting any display on my screen , also my hard disk light stop working .

    If the CPU is overheating (or failed), the system may be shutting down in self-protection. Have you been overclocking? Have you reset the motherboard settings to default?
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  4. Indianatone
    Posts : 1,686
    Windows 7 x64 Ultimate and numerous virtual machines
       New #3

    soaef said:
    Hello

    Yesterday my PC shutdown ever 2-3 Hours without any reason.
    So I decided to check it what's the problem ,so I just clean the RAM shot and remove the dirt from the case.
    An I try to run my PC without closing the case,So when I turn on the power ,My motherboard is getting power signal(green light ) and when I start my PC ,my CPU fan start running but my SMPS fan is not running also I an not getting any display on my screen , also my hard disk light stop working .
    Replace the power supply. The fan in the power supply will be powered by a 12 volt supply which is also needed by the hard drives, motherboard and video card.
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  6. matts6887
    Posts : 1,449
    Windows 7 ultimate 64-bit
       New #4

    i agree with roger. You should probably check your cpu fan for overheating. Also, indiana is right; if the video card, etc are not getting the proper voltage; then certain fans may function poorly or in this case not at all.
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