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    CPU usage raises to 50% by System (NT Kernel & System) on Windows 7

    Discussion in 'Windows OS and Software' started by gilf, Nov 21, 2009.

  1. gilf

    gilf Notebook Enthusiast

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    Hey,

    I've upgraded to Windows 7 Professional 32-bit about a month ago.
    Everything worked great on my Vaio Z570N.

    In the last few days I notice my CPU usage raise to 50% every few minutes when I use the computer. I think it happens mostly when I'm browsing the net using Chrome, which I reinstalled today, but nothing changed.

    The process that gives me the troubles is System (PID=4), or as it described: NT Kernel & System.
    I see it goes to 50% (which is of course 100% cpu usage) and back to 0% after few seconds.

    It really bothers me since the computer is horribly slow when it happens, obviously.

    When I use Resource Monitor to see what it does while taking 50% cpu, I see no change in Disk\Memory\Network usage. So I can't really tell what happens during that time.

    Did anyone else ran into this problem? or have any insight on this?


    TIA,
    Gil.
     
    gilf, Nov 21, 2009
    #1
  2. coolhamoood

    coolhamoood Notebook Consultant

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    its happens to me on my TX5 too

    and its caused by task schedule ,,, am thinking to install winxp now :(
     
    coolhamoood, Nov 21, 2009
    #2
  3. gilf

    gilf Notebook Enthusiast

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    logical, i came across task scheduler during my searching...
    do you have any idea which task is it? you can simply disable it and run it manually if needed.

    must be something new here, since it only started recently.
     
    gilf, Nov 22, 2009
    #3
  4. GoodBytes

    GoodBytes NvGPUPro

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    It sounds like a driver problem. Ensure that you have the latest drivers form the hardware manufacture, particularly for the motherboard chipset, SATA controller, wireless card, and graphic card.
     
    GoodBytes, Nov 22, 2009
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  5. gilf

    gilf Notebook Enthusiast

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    But it only started to occur recently, while I had the windows and the drivers installed with no change for a month.
     
    gilf, Nov 23, 2009
    #5