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  1. #1
    New ROGer Array
    Join Date
    Dec 2018

    "CPU Fan speed error detected". Any Ideas why this is popping up all a sudden?

    Had this system for just about 3 years now and never seen this warning start on booting the system up. However it occurred a few days ago without warning.

    Am getting the error of "CPU Fan speed error detected" on startup and only option I have to get into the system really is just to IGNORE the CPU fan speed in the MONITOR section of the BIOS. That doesn't seem like a real 'solution'.

    The *only* thing that has happened is that Windows did an update of the system the night before. Then all of a sudden its not getting any CPU FAN monitoring feedback. I don't know whether it previously did or not before.

    Right now the main fans that blow air through the top seem to be kicking in when doing 'normal' browsing tasks on Internet. Previously they only seemed to kick in if I was doing some kind of gaming or something for any period of time.

    I have looked at online videos of tear-downs and it seems the two main BIG fans are working - however does anyone know if there is a separate CPU fan thats also supposed to be working and detectable?

    Does anyone have any other possible suggestions on a full solution for this?

    Model: ASUS G20CB
    CPU: i7-6700 @ 3.40GHz.
    GPU: GeForce GTX 970

  2. #2
    ROG Guru: Green Belt Array panzlock PC Specs
    panzlock PC Specs
    Laptop (Model)ASUS X553M, ASUS Zenpad 10 Z300M, ASUS X542BA-DH99
    MotherboardASUS P8Z68-V LX, ASUS Z170-A, ASUS ROG Strix B350-F Gaming
    ProcessorIntel i5-2500K, Intel i7-6700K, AMD Ryzen R7 1700
    Memory (part number)8GB Kingston 1333MhzDDR3 C9, 16GB G.Skill Aegis 3000Mhz DDR4 C16, 16GB G.Skill Trident Z 3200Mhz C16
    Graphics Card #1EVGA GTX 560Ti, ASUS ROG Strix GeForce GTX 1070 O8G OC, Sapphire Nitro+ RX Vega 56
    Monitor32" INSIGNIA 720p, 32" Samsung 1080p C32F391FWN, 32" ASUS 1440p VA32AQ
    Storage #1Seagate 150GB 7200RPM, Samsung 850 EVO 250GB 2.5" 6Gb/s Solid State Drive (X2)
    Storage #2Seagate 500GB 7200RPM, WD Blue 3TB - 5400 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch
    CPU CoolerDeepcool GAMMAXX 300, Deepcool Lucifer V2, Wraith Spire
    CaseAntec Sonata, Deepcool Dukase V1, Deepcool Dukase V3
    Power SupplyATX 650, EVGA SuperNOVA 850 P2 (X2)
    Keyboard Logitech K220, MSI Interceptor DS4200 (X2)
    Mouse Microsoft 1850, Microsoft 4500, Gamdias Erebos LE, MSI DS 100, Redragon M601 Centrophorus
    Headset/Speakers Logitech Z313, Logitech Z506 (X2)
    OS Windows 10 Home X64, Windows 10 Pro X64 (X2)
    panzlock's Avatar
    Join Date
    Nov 2016

    I'd like to deploy my troops in her country.

  3. #3
    New ROGer Array
    Join Date
    Dec 2018

    Quote Originally Posted by panzlock View Post
    Yea, thanks that helps in a way to bypass the error and allow computer to boot. However I have been using the computer for at least 2 years now and have never had that error, never opened it up to change anything internally, then all of a sudden on day "BOOM!" I get the error. if there is in fact a CPU fan - is there a way to check that it is functioning correctly, maybe it needs to be replaced...if not why did the error all of a sudden come up now and not within the previous 2 years or so?

    It doesn't make sense.

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