Vista RC2 32 shows AMD X2 4200+ as one core

Discussion in 'Windows Vista General Discussion' started by Gary S, Oct 29, 2006.

  1. Gary S

    Gary S Guest

    I have a AMD X2 4200 machine that only shows 1 core & 1 logical processor in
    system information. Under Device Manager it lists AMD Athlon 64 X2 Dual Core
    Processor 4200+ twice. Under task manager in performance tab only shows as
    one CPU, under view - cpu history I only have one option "one graph per CPU"
    , CPU-Z shows as dual core 4200+ but will not let me select 2nd processor.
    This leads me to beleive that Vista RC2 is turning off or not recognizing the
    other core. I have Vista on its own partion and dual boot with winxp sp2 and
    everything shows up as dual processor under winxp sp2. I have tried right
    clicking on processes and see nothing about affinity. Any ideas or help on
    this would be most welcome.
    Gary S, Oct 29, 2006
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  2. Gary S

    Bill Guest

    I have an X2 3800 and RC2 recognizes both cores under the Task Manager
    and Device Manager properly.

    Did you do an upgrade or a clean install?

    Are you overclocking the CPU?
    Bill, Oct 30, 2006
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  3. Gary S

    Gary S Guest

    I did a clean install to an empty partion on my C: drive. The install went
    with out a hitch even had drivers for the SATA. I have a gigabyte GA-K8NS
    Ultra-939 MB. with award bios fully updated. 2 gig ram. Overclock 219 from
    stock 200 and shows single core under task manager and under system
    information. Under winxp sp2 everything shows as dual core, task manager has
    two boxs, one for each core and cpu-z let you look at both processors but not
    vista rc2.
    Gary S, Oct 30, 2006
  4. Gary S

    Bill Guest

    That might be the problem - overclocking the system.

    Vista, like Windows SP x64 edition, is very finicky about stability.
    If the system is not 100% stable, you may experience installation

    There are two things to try.

    First, you can check your system stability by running Prime95 on both
    cores by setting the CPU affinity. Make sure you run it at least
    overnight (8 hours) to make sure it's stable:

    You can also check your memory to make sure it's good too:

    After you check that, and if everything passes ok, then I suggest you
    drop the overclock back to the defaults and try installing again.

    Just so you know, I have my X2 3800 overclocked to 2500 (25% boost),
    and my memory (DDR400) is also pushed over to about DDR 416 (208 MHz).
    But I'm running with extra case cooling and a big Zalman 9500 cooler
    on the CPU so my system is cool and comfortable, and I tested my
    system with Prime95 x2 and Memtest to confirm that it's stable.
    Bill, Oct 30, 2006
  5. Gary S

    Gary S Guest

    Well I seem to have found the problem. The ACPI was set to single core so I
    renamed halmacpi.dll to hal.dll and rebooted and what do you know dual core,
    even in the gadgets, task manager, the whole nine yards. BUT! when I do this
    it disables my agp ati x850 video card, code 43. From what i can gather this
    is an known problem and MS just wants everyone to be on PCI-E <grin> When I
    reinstall the original HAl.dll I get my video back. Subscores are processor
    4.9 single or double core, Video under single is 5.9, disabled under dual
    core is 1. I'll go back to single core and pretty effects. The overclock is
    just a slight bump and stable so that is not a problem. I guess I will wait
    for RC3 or another year for the kinks to work out or I can afford to build
    another box. Thanks for your help.
    Gary S, Oct 30, 2006
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