Windows 8 and 8.1 Forums


System consuming 10-30% CPU

  1. #1

    System consuming 10-30% CPU


    Any idea, why could this be happening? System process consumes up to 30% CPU, which is unusually, as I have never seen System process consume anything on any machine (including same laptop with Windows 7).
    Attached Thumbnails Attached Thumbnails CPU.png  

      My System SpecsSystem Spec

  2. #2


    Posts : 1,851
    8250 x86 + 7 SP1 x86 + Ubuntu 12.04 LTS x86


    Probably some kind of maintenance running. I wouldn't worry about it unless it stays like that non-stop for a long time or something. It's simply the kernel doing its thing.
      My System SpecsSystem Spec

  3. #3


    It stays non-stop.

    I have just figured out that it goes away when I turn off wifi. But it will go back up, when I turn it back on. I guess problem is somehow linked to wifi not reconnecting at standby (other thread).
      My System SpecsSystem Spec

  4. #4


    Posts : 1,851
    8250 x86 + 7 SP1 x86 + Ubuntu 12.04 LTS x86


    I would disable wlanext.exe from starting with Windows. It will probably sort all of your issues right there. Reboot to test.
      My System SpecsSystem Spec

  5. #5


    I reverted to official Lenovo drivers and problem seems to be solved. Thanks anyway.
      My System SpecsSystem Spec

System consuming 10-30% CPU
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