Windows 8 and 8.1 Forums

Very high CPU?

  1. #1


    Posts : 1
    Windows 8 Release Preview

    Very high CPU?


    I downloaded the Windows 8 Release preview yesterday and have noticed my computer to be running very slowly and sometimes crashing.
    I looked on Task Manager and noticed that my CPU was constantly at 100%, so I closed all the applications I was running but on 'Systems' the CPU was still over 50%.
    Here's a screenshot:

    Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting

    Any help on how I can fix this?

      My System SpecsSystem Spec

  2. #2


    Posts : 34
    Windows 8.1 PRO with Media Centre Upgrade x64


    Were you running Skype? An update, 5.9.0.123, issued yesterday, has cured that. The previous version was using >30% on my machine.
      My System SpecsSystem Spec

  3. #3


    Posts : 1
    windows 8 release preview x64 windows 7 ultimate x64


    there is another thread on here that explains but I uninstalled the realtek wifi drivers that windows 8 release preview had installed and downloaded and installed the wifi drivers for my computer and it fixed the cpu running at 50% or more all the time

    Toshiba satillite C655-S5512
    2x 2.20g processors
    4gb ram
      My System SpecsSystem Spec

  4. #4


    Posts : 51
    Windows 8 RP x64


    I am pretty sure CPU graph at Task manager is crazy. Right now it says I'm using 100% CPU, and my desktop gadget says I'm using 11%.

    To enable this gadget, right click on desktop -> gadgets -> cpu meter. It tells you CPU and RAM usage.
      My System SpecsSystem Spec

  5. #5


    Posts : 3
    Windows 8 64bit


    I have exactly the same problem. On cold boot it looks like windows 8 locks 1 core completely and system process is running on 50%, which is 1 core (as the screen in the opening post shows). I don't think it is just a task manager bug as PC wizard 2012 shows 1 core at 100% and the other more or less 0%. The only way to resolve this issue is to restart and from then all works as it should.

    Any suggestions are welcome, thanks.
      My System SpecsSystem Spec

  6. #6


    Posts : 1
    Win8 RP


    Quote Originally Posted by Clostridium View Post
    there is another thread on here that explains but I uninstalled the realtek wifi drivers that windows 8 release preview had installed and downloaded and installed the wifi drivers for my computer and it fixed the cpu running at 50% or more all the time

    Toshiba satillite C655-S5512
    2x 2.20g processors
    4gb ram
    I had the exact same problem. The windows 8 drivers on the Release Preview build were bugged for Realtek wifi. Installing the newer ones off the Toshiba website fixed the issue.
      My System SpecsSystem Spec

  7. #7


    Palm Coast FLorida
    Posts : 370
    Windows 8 Pro ($39.99 upgrade)


    if your CPU is very high please keep it away from it's weed supply
      My System SpecsSystem Spec

  8. #8


    If you have any third party security installed( ESET, Avast etc), uninstall them.
      My System SpecsSystem Spec

  9. #9


    127.0.0.1
    Posts : 144
    Windows 8.1 Pro x64


    Quote Originally Posted by tcman50 View Post
    if your CPU is very high please keep it away from it's weed supply
    I know this isn't 4chan, but....
    Click image for larger version
      My System SpecsSystem Spec

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