high cpu usage - unknown cause

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  1. Posts : 5
    win7
       #1

    high cpu usage - unknown cause


    Hi,
    I get regularly high CPU usage without any visible reason in task manager. A desktop gadget shows the CPU usage between 50 - 70 % but in the task manager there are two or three processes with 1 % each.
    I see also higher power consumption. In normal idle state I have some 18 W, with the CPU usage increased it is 40 W. And of course, the notebook is pretty noisy at that time because the CPU temperature runs to 50 °C. (Usual is 15 - 20 °C.)
    The notebook is HP ProBook 6540b - Intel i5, Win 7 Pro. It is new and I am quite disappointed I cannot take it to a library because of the noise.

    Because I see nothing in the task manager I am not able to determine the cause of the problem.
    If anybody has any ideas what to do, I would be very glad. Thx.
      My Computer


  2. Posts : 13,354
    Windows 7 Professional x64
       #2

    Welcome!

    I suggest ending all the third-party processes one at a time, next time it happens. Google the name of the process, and if it's not a part of Windows, right-click and select End Process.
      My Computer


  3. Posts : 1,747
    window's 7
       #3

    can you post a snip of your task manager when it reach high usage . I'll appreciate it :)
      My Computer


  4. Posts : 17,796
    Windows 10, Home Clean Install
       #4

    Jonathan_King said:
    Welcome!

    Welcome to the Forum Pontifex

    I suggest ending all the third-party processes one at a time, next time it happens. Google the name of the process, and if it's not a part of Windows, right-click and select End Process.
    Excellent and informative post as usual. I would just like to add that pontifex may have to click on show process from all users, in the lower left of task manger, first. I make this comment because just recently, I have read 2 posts where this fact was not known.

    Good luck to all.
      My Computer


  5. Posts : 587
    Windows 7 x64
       #5

    pontifex said:
    Hi,
    I get regularly high CPU usage without any visible reason in task manager. A desktop gadget shows the CPU usage between 50 - 70 % but in the task manager there are two or three processes with 1 % each.
    I see also higher power consumption. In normal idle state I have some 18 W, with the CPU usage increased it is 40 W. And of course, the notebook is pretty noisy at that time because the CPU temperature runs to 50 °C. (Usual is 15 - 20 °C.)
    The notebook is HP ProBook 6540b - Intel i5, Win 7 Pro. It is new and I am quite disappointed I cannot take it to a library because of the noise.

    Because I see nothing in the task manager I am not able to determine the cause of the problem.
    If anybody has any ideas what to do, I would be very glad. Thx.
    .
    I suggest trying System Explorer which will enable you to see processes in much more detail then the Task Manager.

    System Explorer Homepage

    System Explorer is freeware, and has other great capabilities in addition to process viewing.
      My Computer


  6. Posts : 5
    win7
    Thread Starter
       #6

    richc46 is right. I didnot switch the manager to see processes of all users. Now, I see two are responsible:
    WmiPrvSE.exe user: Network service
    and svchost.exe user: system
    If I understand it well, the both are a part of windows. But they still seem to increase the cpu usage randomly, without any specific action from my side...
    Attached Thumbnails Attached Thumbnails high cpu usage - unknown cause-task-manager-1.png   high cpu usage - unknown cause-task-manager-2.png  
      My Computer


  7. Posts : 587
    Windows 7 x64
       #7

    pontifex said:
    richc46 is right. I didnot switch the manager to see processes of all users. Now, I see two are responsible:
    WmiPrvSE.exe user: Network service
    and svchost.exe user: system
    If I understand it well, the both are a part of windows. But they still seem to increase the cpu usage randomly, without any specific action from my side...
    .
    Have you done a scan for malware with something like MBAM or SAS? It's always good to check because malware can masquerade as system files.
      My Computer


  8. Posts : 17,796
    Windows 10, Home Clean Install
       #8

    Victek, excellent point.
    svchost trojan/virus/spyware/malware!? - Tech Support Guy Forums

    So astute, that I think it deserves rep.
      My Computer


  9. Posts : 5
    win7
    Thread Starter
       #9

    no malware


    I scanned the computer for malware with MBAM. Nothing found.
      My Computer


  10. Posts : 17,796
    Windows 10, Home Clean Install
       #10

    Ok then we have to assume that the increased cpu usage is normal for the OS.
    http://www.howtogeek.com/howto/windo...is-it-running/

    For Vista and 7


    http://www.technibble.com/how-to-fix...u-memory-leak/
      My Computer


 
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