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Old December 27, 2008, 05:32 PM
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Default Windows xp sp1 doesn't notice dual cores.

In my hardware manager it shows two cpu's like it should but when I open up task manager it acts like there is only one cpu!
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Old December 27, 2008, 05:36 PM
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Is this a fresh install? Or a cpu upgrade?

If cpu upgrade you need to re-install.
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Old December 27, 2008, 05:38 PM
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I just installed windows and upgraded from sp2 to sp3
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Old December 27, 2008, 05:43 PM
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Click the "Computer" and it should show ACPI.

Otherwise try:
Annoyances.org - How to change back to ACPI? (Windows XP Discussion Forum)
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Old December 27, 2008, 05:43 PM
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Edit: others answered before me while I was typing :)
Long story short:
Sounds like ACPI multiprocessor support is not enabled. You need to enable it!
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Old December 27, 2008, 05:51 PM
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Under the computer drop down it says:
Quote:
Advanced Configuration and power Interface (ACPI) PC
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Old December 27, 2008, 07:20 PM
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Quote:
Originally Posted by malmal View Post
Go to View in the task manager . then cpu history then one graph per cpu.
already set to that did nothing
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Old December 27, 2008, 08:59 PM
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Quote:
Originally Posted by malmal View Post
Go to run, msconfig, bootini, advanced, check there is a 2 in the numproc box.
Not sure if this will work as my comp has nothing in the numproc box , yet I see two charts.
it Only gives me the option of a one
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Old December 27, 2008, 09:23 PM
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ARTICLE: ACPI Uniprocessor to Multiprocessor HAL Upgrade

This amazing tut made it work for me :D
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Old December 28, 2008, 08:03 AM
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ahah aww that so nice of you working so hard on my problem ^^ thanks :D
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