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Drein's avatar
Drein
Iron Contributor
Jan 01, 2026

Windows 11 fan spins wildly during standby

When the laptop is in idle standby mode, it often abruptly shifts from quiet operation to full-speed fan rotation. However, routine checks in Task Manager reveal no high-resource processes. Upon occasionally opening Task Manager and observing without interaction, a suspicious process appears when the fan activates. Yet, the process vanishes immediately upon touching the mouse or keyboard, making sustained tracking impossible. Seeking troubleshooting and resolution methods for this invisible process.

3 Replies

  • Wayneyan's avatar
    Wayneyan
    Iron Contributor

    A more detailed tool from Microsoft Sysinternals that can reveal hidden or less obvious processes.

  • HarperLake's avatar
    HarperLake
    Iron Contributor

    Available via Windows Performance Toolkit. Record a trace during idle, then analyze to see what processes or drivers wake up the system.

  • Gask's avatar
    Gask
    Iron Contributor

    It might download and install update. I have the same issue on my laptop.

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