Windows 8 and 8.1 Forums


multi core support in windows 8 preview

  1. #1


    Posts : 3
    windows 8 design preview

    multi core support in windows 8 preview


    Hi all.

    I have installed Win 8 preview and really like the OS however I have come across a problem and would be very grateful for any help people can give me. for some reason the OS only seeing one of the 3 core's of my CPU does any one know of a way to get it to see the other core's or of a possible work around for the problem.

    thanks in advance

      My System SpecsSystem Spec

  2. #2



    The Contemplator
    (1963-2013)
    Doncaster, UK
    Posts : 638
    Windows 8.1 Pro RTM x64


    Hi ayres48 and welcome to Windows 8 Forums

    Is this what you mean?

    Click image for larger version Click image for larger version

    The first image shows a single graph for both CPU cores, whereas the second image shows a separate graph for each core. To switch from single to separate mode, right-click the graph, mouse over Change graph to and click on Logical Processors. To switch from separate to single mode, click on Overall Utilization instead.
      My System SpecsSystem Spec

  3. #3


    Posts : 3
    windows 8 design preview


    yes except mine is only showing a single core
    Click image for larger version
      My System SpecsSystem Spec

  4. #4


    Posts : 22,582
    64-bit Windows 10


    Hello Ayres, and welcome to Eight Forums.

    Double check using the tutorial below to make sure that you have the Number of processors box unchecked in msconfig "Boot" tab.

    Processors - Limit Number Used by Windows 7 - Windows 7 Forums

    Hope this helps,
    Shawn
      My System SpecsSystem Spec

  5. #5



    The Contemplator
    (1963-2013)
    Doncaster, UK
    Posts : 638
    Windows 8.1 Pro RTM x64


    OK, it looks as though only one core is selected either in the BIOS (you will need to refer to your motherboard manual to check for the setting to change) or in msconfig. With the latter, click on the Boot tab and then Advanced options... Ensure that the checkbox next to Number of processors: is unchecked and then click OK twice to exit. Restart for changes to take effect. Note that you cannot utilise more processor cores than permitted in the BIOS (in other words, if you have a triple-core processor and only 2 cores are enabled in the BIOS, then unchecking the setting in msconfig will only allow 2 cores to be used and not all 3).
      My System SpecsSystem Spec

  6. #6


    Posts : 3
    windows 8 design preview


    bios is correct i have checked and the number of processors is unchecked have set up to multi boot from a separate hard drive and all three cores are working on there even cpu-z is showing 1 core on here
      My System SpecsSystem Spec

  7. #7


    Appelhülsen Germany
    Posts : 189
    Windows 7 and Windows Developer Dual efi boot


    Hello ayres

    Mouse over the Windows flag and select Search, type in Device Manager and click on the magnifying glass to search, Under settings you should now see three apps have been found, click on settings then select Device Manager.

    In Device Manager click on the little arrow next to Processors this will open up the section (see my snip)

    Click image for larger version

    Now right click on your core you should only have one showing and select uninstall, accept the warning Click image for larger version


    then click on restart your Computer Click image for larger version


    When the computer restarts it should find and install all cores.

    If this does not work you are probably looking at a new install
      My System SpecsSystem Spec

  8. #8


    BELGIUM
    Posts : 503
    WINDOWS 8.1 x64


    hello guys,

    well i am confused here. i have the I5-670 Clarkdale, 2 cores, 4 threads, but i only see 1 physical and 1 logical processor like Ayres shows

    If i change this to 2 processors and 4 logical, restart....will Win8 boot?

    What i mean is, suppose one sets 4 processors and has only 2 what will happens?

    correction, it only shows 1 processor in MSCONFIG and cannot put in more, but 4 cores in device manager


    I hate hangups or boot problems...who doesn't

    thanks


    Jeff
      My System SpecsSystem Spec

  9. #9


    I hate hangups or boot problems...who doesn't
    I'm with you mate, such probs sUcK
      My System SpecsSystem Spec

multi core support in windows 8 preview
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