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Tom's Hardware > Forum > Windows XP > Configuration & Customization > Quad core shows only 2 cores in task manager in windows xp

Quad core shows only 2 cores in task manager in windows xp

Forum Windows XP : Configuration & Customization Quad core shows only 2 cores in task manager in windows xp

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bigdude   06-17-2011 at 04:42:13 AM

I am using sp3 win xp 32bit and have installed a 3ghz quad core . I have the same motherboard at work (p5n-d asus) and that one is showing 4 cpu's in task manager under proformance tab and show all cores.

My problem is my home comp shows only 2 cores in the window and not 4 cores like my work comp?

What is the problem?

Thanks
TT

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Emerald   06-17-2011 at 08:33:30 AM

did you change the CPU fro a Dual core to a Quad core?

does the BIOS see all four cores?

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Hawkeye22   06-17-2011 at 04:52:42 PM

Check the device manager under "computer". It should read something like ACPI mutiprocessor PC. if it doesn't, the wrong HAL may be installed. Right click it and select update driver then select the correct HAL.

http://support.microsoft.com/kb/309283

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livebriand   06-17-2011 at 08:55:06 PM

In device manager, under Processors, are 4 CPUs with the same name listed?

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