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    dell technician replaced my 720qm and now my windows only recognizes 1 core.

    Discussion in 'Dell XPS and Studio XPS' started by tvdang7, Feb 14, 2011.

  1. tvdang7

    tvdang7 Notebook Evangelist

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    Can anyone help me figure out what i need to do to make windows recognize all my cores and threads?
    In the bios i do not see anything options about multicore.
    Ive deleted the cpu driver and let windows reinstall it.

    Ive had this issue before on another computer but i forgot what i had to do to resolve the problem.

    windows 7
     
    tvdang7, Feb 14, 2011
    #1
  2. mourningstar62

    mourningstar62 Notebook Geek

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    open a run line (windows key + R) type msconfig. Go to boot tab and click advanced options. Make sure the number of processors box is unchecked.
     
    mourningstar62, Feb 14, 2011
    #2
  3. tvdang7

    tvdang7 Notebook Evangelist

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    yea it is already. ima try a system restore.
     
    tvdang7, Feb 14, 2011
    #3
  4. ronnieb

    ronnieb Representing the Canucks

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    Try updating your bios
     
    ronnieb, Feb 14, 2011
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  5. Dany|R

    Dany|R Notebook Guru

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    I had the same problem (2 core recognized), try reflashing bios :)
     
    Dany|R, Feb 14, 2011
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  6. weapon

    weapon Notebook Guru

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    reinstall windows
     
    weapon, Feb 14, 2011
    #6
  7. tvdang7

    tvdang7 Notebook Evangelist

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    definitely not what i want to do at the moment. i know that will fix it 100% however. Can you reflash a bios even if it is the most updated one? ill try it when i get home have an exam to study for.
     
    tvdang7, Feb 14, 2011
    #7
  8. bushe777

    bushe777 Notebook Enthusiast

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    have you tried reinstalling from dell drivers instead of letting windows update look for them, I had an issue when looking for the gpu driver from the official site of nvidia and turned out it only works with dell drivers.
     
    bushe777, Feb 15, 2011
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  9. error-id10t

    error-id10t Notebook Consultant

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    Use the BIOS method from here.

    http://forum.notebookreview.com/del...os-modding-gpu-oc-fun-profit.html#post6754282

    No need to use the provided BIOS files, just the method which allows you to install whatever version (you may need to extract the A12 BIOS for example to the correct format to run it via this).

    add: I should add that I've had this problem too after BIOS update. But in my case, a reboot fixed it and all cores 'came back'.
     
    error-id10t, Feb 15, 2011
    #9