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Fan making noise after security update for microsoft windows KB5072033 in HP EliteBook 745 g6

Basit Untoo 0 Reputation points
2025-12-14T19:04:44.3+00:00

Since installing the recent Microsoft Windows Security Update, KB5072033, users of the HP EliteBook 745 G6 have been facing a severe and infuriating performance problem: the laptop's cooling fan runs constantly, loudly, and aggressively, even when the system is nearly idle.

This persistent, bothersome noise is not just an inconvenience—it's a clear symptom of a software conflict that is burning through critical computer resources (CPU, APU, and battery), causing unnecessary heat and instability.

Failed Troubleshooting: Update is Irreversible!

What makes this issue particularly critical and frustrating is the inability to revert the changes. Affected users report the following attempted fixes have failed:

Cannot Uninstall KB5072033: The update often cannot be easily removed through the standard Windows Update history options, effectively making the performance-killing change permanent.

BIOS Update Provides No Relief: Even after updating the laptop's BIOS/firmware (which typically controls fan curves and thermal management) to the latest available version, the problem persists, indicating a deeper, unresolved conflict between the Windows update and the EliteBook's hardware/firmware platform.

This situation places users in a bind, forcing them to operate their premium business hardware with significantly degraded performance, excessive noise, and accelerated component wear. Urgent action is needed from Microsoft and HP to provide a fix that can correctly resolve the thermal/fan management logic introduced by this update.

Windows for home | Windows 11 | Performance and system failures
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  1. Ian-Ng 13,435 Reputation points Microsoft External Staff Moderator
    2025-12-15T16:47:52.45+00:00

    Hi @Basit Untoo,

    Welcome to Microsoft Q&A forum.

    Based on your detail sharing, I completely understand how distracting it is to have your laptop fan running loudly and constantly, even when you are trying to work. This is certainly not the quiet experience you expect from your device.

    I would like to share that following recent system changes, the operating system often executes complex optimization and maintenance tasks in the background. These processes can be quite resource-intensive, even if the laptop appears idle. To ensure system stability during these heavy calculations, the thermal management system is designed to run the fans at maximum capacity to prevent overheating.

    While this behavior is intended to protect the hardware, I understand it creates a disruptive environment. To help control the noise level while these processes complete, kindly try the following adjustment to your power settings - Adjust processor state.

    1. Firstly, open the Control Panel and go to Power Options.
    2. Then click Change plan settings next to your current plan, then select Change advanced power settings.
    3. Scroll down to Processor power management and expand it.
    4. Under Maximum processor state, change both "On battery" and "Plugged in" from 100% to 99%.
    5. Click Apply and OK.
      User's image

    This adjustment slightly limits the processor's maximum heat output, which should encourage the system to lower the fan speed without interrupting the necessary background tasks.

    I understand this is not the experience you were expecting. However, given the intricate nature of system software, updates can sometimes introduce temporary changes to performance or hardware behavior that are difficult to predict.

    Please let me know if this helps reduce the noise levels. Thank you for your patience and your understanding. If you have any questions, please feel free to reach out.

    I'm looking forward to your reply.

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