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  1. #1
    ayres48's Avatar

    New Member

    Join Date : Nov 2011
    Posts : 3
    windows 8 design preview
    UK uk durham city

    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
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  2. #2
    Dwarf's Avatar

    Moderator

    Join Date : Jul 2009
    Doncaster, UK
    Posts : 480
    Windows 8 Consumer Preview 32-bit & 64-bit
    England uk yorkshire


    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.
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  3. #3
    ayres48's Avatar

    New Member

    Join Date : Nov 2011
    Posts : 3
    windows 8 design preview
    UK uk durham city


    yes except mine is only showing a single core
    Click image for larger version
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  4. #4
    Brink's Avatar

    Administrator


    Join Date : Jul 2009
    Posts : 1,683
    64-bit Windows 7 Ultimate & Windows 8 Consumer Preview
    USA us texas


    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
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  5. #5
    Dwarf's Avatar

    Moderator

    Join Date : Jul 2009
    Doncaster, UK
    Posts : 480
    Windows 8 Consumer Preview 32-bit & 64-bit
    England uk yorkshire


    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).
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  6. #6
    ayres48's Avatar

    New Member

    Join Date : Nov 2011
    Posts : 3
    windows 8 design preview
    UK uk durham city


    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
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  7. #7
    Pooch's Avatar

    Senior Member

    Join Date : Sep 2011
    Appelhülsen Germany
    Posts : 192
    Windows 7 and Windows Developer Dual efi boot
    England


    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 Name:  Capture1.PNG
Views: 383
Size:  26.6 KB


    then click on restart your Computer Name:  Capture2.PNG
Views: 383
Size:  26.3 KB


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

    If this does not work you are probably looking at a new install
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  8. #8



    Senior Member

    Join Date : Nov 2011
    Posts : 102
    windows 8 x64 D.P.
    Belgium


    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
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  9. #9
    vrosa's Avatar

    Senior Member


    Join Date : Jan 2011
    Belo Horizonte City
    Posts : 2,466
    Windows 7 SP1 x64, Windows 8 CP x64, Windows 8 Server CP
    Brazil au west australia 2


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