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Above 50% CPU usage but task manager does not show it

Discussion in 'Laptops' started by Roland Mösl, May 25, 2012.

  1. Roland Mösl

    Roland Mösl Guest

    Window 7 home premium

    Since some hours, more than 50% CPU usage,
    but when I cout together what the task manager
    shows, it's maybe 5 to 10%

    What can make this trouble?
    How to find out?
    How to stop it?

    I need control about my notebook.

    It would be the total horror to be on
    a long distant flight in an airplane
    and some senseless windows process
    waste my normal 12 hours battery life
    Roland Mösl, May 25, 2012
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  2. Roland Mösl

    BillW50 Guest

    Sounds like DPCs. This is easy to check with the simple tool below.

    DPC Latency Checker

    All of my Asus EeePC 700 series netbooks have this problem. If they are
    close to another electronic device, the DPCs will climb.
    BillW50, May 25, 2012
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  3. Roland Mösl

    ~misfit~ Guest

    Windows. especially 7, does a few things in the 'background', like run the
    monthly Malicious Software programme as well as defragging the HDD. Of
    course, as soon as you open Task Manager the 'background' tasks stop as the
    computer is no longer idle.....

    Google Win 7 background process' for further info.

    "Humans will have advanced a long, long, way when religious belief has a
    cozy little classification in the DSM."
    David Melville (in r.a.s.f1)
    ~misfit~, Jun 1, 2012
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