Windows 10: High CPU usage with 'system interupts'

Discus and support High CPU usage with 'system interupts' in Windows 10 BSOD Crashes and Debugging to solve the problem; High CPU usage with 'system interrupts'. However, the usage decreases when the task manager is opened. On opening the task manager, the system... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by Rb89, May 20, 2019.

  1. RB89
    Rb89 Win User

    High CPU usage with 'system interupts'


    High CPU usage with 'system interrupts'. However, the usage decreases when the task manager is opened. On opening the task manager, the system interrupt is visible for a few seconds and then the CPU usage goes down.

    :)
     
    Rb89, May 20, 2019
    #1
  2. DEADALOS
    deadalos Win User

    "System" process with high CPU usage

    I have exactly the same issue (high CPU usage) on a brand new HP ProBook 440 G5 (i7-8550U, pre-installed Win 10 Pro).

    I am pretty sure that there is a problem with audio drivers when the computer wakes up from a sleep mode. I first observed that process flow.exe (audio bloatware provided by HP/Conexant) was consuming (after waking up) ~10–15 % CPU. Here's what I did:

    • I have updated Windows to 1709, build 16229.251 and installed all updates --> Nothing has changed.
    • I have updated BIOS to the latest version provided by HP. --> Nothing has changed.
    • I have run Windows troubleshooting and HP Support Assistant checks --> No problems found, nothing has changed
    • I have manually updated Conexant ISST Audio Drivers (via Device Manager -> Update drivers). Windows installed a newer version. -->
      CPU usage by flow.exe has disappeared, but process called System in thread ACPI.sys+0x21cb0 started consuming ~20 % CPU.
    • I have uninstalled all Conexant software&drivers and manually installed generic High Definition Audio Device drivers provided by Microsoft (Driver Date: 21.02.2018). --> ACPI.sys+0x21cb0 still consumes ~20 % CPU.

    Same issues are discussed in these threads on HP site:


    The result is I cannot use sleep mode (as advised by this post:
    https://h30434.www3.hp.com/t5/Business-Notebooks/ProBook-450-with-high-CPU-usage/m-p/6611446/highlight/true#M149605    ).
     
    deadalos, May 20, 2019
    #2
  3. DENETTEBOYD-KING
    DenetteBoyd-King Win User
    DenetteBoyd-King, May 20, 2019
    #3
  4. JANMCCOY_827
    JanMcCoy_827 Win User

    High CPU usage with 'system interupts'

    high cpu usage

    After downloading windows 10, anytime I run any programs, I get high CPU usage. It does not matter whether it is google chrome, task manager, playing games, whatever. Anything seems to spike the CPU usage. I have already run malwarbytes and my antivirus
    programs and find no viruses. Any suggestions? Thanks.
     
    JanMcCoy_827, May 20, 2019
    #4
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High CPU usage with 'system interupts'

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