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  1. #1
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    G20AJ fans running up during shut down

    I have had my G20AJ for a few months and I've noticed something. When I shut down, it looks like Windows shuts down and the screen loses signal, but all the lights on the computer case are still on for another 20 seconds or so. Then suddenly all the fans run up to full speed for another 20 seconds before it finally shuts down and turns the lights off. I think the time it takes to do this cycle and shut down has been getting longer as well though that might just be me being paranoid. No other issues. Is this normal or a symptom of something else?

    Thanks!

  2. #2
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    Ditto, I have had mine for a couple of weeks and it does the same..

  3. #3
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    Do the same here, both at start up and shut down, but not so long as 20 sec, more like 5-6 sec.

  4. #4
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    Quote Originally Posted by mortenstj View Post
    Do the same here, both at start up and shut down, but not so long as 20 sec, more like 5-6 sec.
    Yeah, that's how it started for me and just got longer over time.

    But mine doesn't do it at start-up, starting is almost instant. It's just at shut-down it lingers and runs the fans.

  5. #5
    ROG Guru: Yellow Belt Array a100 PC Specs
    a100 PC Specs
    MotherboardH97 Asus
    ProcessorIntel i7-4790 3.6GHZ
    Memory (part number)16GB
    Graphics Card #1Zotac GTX980Ti Reference OC`d GPU: +210MHZ - Memory: +300MHZ
    Sound CardOn board
    MonitorBenQ XL2430T Gaming LED Monitor
    Storage #1Samsung Evo Pro 850 512G SSD
    CPU CoolerRog Dual Fan
    CaseG20AJ
    Keyboard Asus
    Mouse Asus
    OS Win 8.1 Core Single Language
    Accessory #1 Logitech G27 Racing Wheel

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    For me shutting down takes 5 seconds or so after I issue the shutdown.

    Fans run up for 2 secs and system turns off.

  6. #6
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    So, strange thing. I upgraded to Windows 10 (was 8.1) and now my shut down is instant with no fan run at all.

    Also, something else changed. Before, my keyboard and mouse lights would stay on even with the PC off. Now they turn off as well. Does Windows 10 have completely different power management that would cause this?

  7. #7
    ROG Guru: Black Belt Array Korth PC Specs
    Korth PC Specs
    MotherboardASUS X99 R5E (BIOS2101/1902)
    ProcessorHaswell-EP E5-1680-3 SR20H/R2 (4.4GHz)
    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Graphics Card #2NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Sound CardJDS Labs O2+ODAC (RevB), USB2 UAC1
    MonitorASUS PG278Q
    Storage #1Samsung 850 PRO 512GB SSDs, 4xSATA3 RAID0
    Storage #2Comay BladeDrive E28 3200GB SSD, 8xPCIe2
    CPU CoolerRaijintek NEMESIS/TISIS, AS5, 2xNH-A14
    CaseObsidian 750D (original), 6xNH-A14
    Power SupplyZalman/FSP ZM1250 Platinum
    Headset Pilot P51 PTT *modded*
    OS Arch, Gentoo, Win7x64, Win10x64
    Network RouterActiontec T3200M VDSL2 Gateway
    Accessory #1 TP-Link AC1900 Archer T9E, 1xPCIe
    Accessory #2 ASUS/Infineon SLB9635 TPM (TT1.2/FW3.19)
    Accessory #3 ASUS OC Panel I (FW0501)
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    I don't know about the Asus G20 specifically, but the firmware in many computing platforms will keep fans spinning at shutdown until temps are brought below a certain threshold. I'm thinking it was a deliberate design choice because the G20 chassis has such confined and controlled airflow and Asus overengineered the cooling system from scratch.

    [Edit]
    But yeah, it could be Windows Shutdown sloppiness lol.

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