I have a WinXP Pro PC running an AMD 4200+ X2 S939 CPU. I recently noticed that when running Task Manager only one core graph is showing. I ran CPUID & PC Wizard 2008 and both programs say I have only ONE core. PC Wizard says 2 cores w/ only one core enabled!
I checked Device Manager and Processor shows only one instance. I updated the driver thru the Device Manager and rebooted and everything looked back to normal...Two cores.
However after a later reboot my PC is back to only one core running. I have rerun driver update but now it says driver is latest. Also ran BIOS update, downloaded & installed various updates from AMD & MS, Googled for several hrs...But I can't find a solution. Is it hardware or Windows? I am totally stumped.
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AMD 4200+ X2 | MSI K8N Neo4 FI | ATI X1950 XT | 3GB G.SKILL RAM | PC P&C ATX Silencer 470 PSU | Lite-On 18X & NEC 16X DVD | 160GB WD & 300GB Seagate | Saitek Eclipse KB | Logitech G5 Mouse | Antec P180
I have a WinXP Pro PC running an AMD 4200+ X2 S939 CPU. I recently noticed that when running Task Manager only one core graph is showing. I ran CPUID & PC Wizard 2008 and both programs say I have only ONE core. PC Wizard says 2 cores w/ only one core enabled!
I checked Device Manager and Processor shows only one instance. I updated the driver thru the Device Manager and rebooted and everything looked back to normal...Two cores.
However after a later reboot my PC is back to only one core running. I have rerun driver update but now it says driver is latest. Also ran BIOS update, downloaded & installed various updates from AMD & MS, Googled for several hrs...But I can't find a solution. Is it hardware or Windows? I am totally stumped.
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AMD 4200+ X2 | MSI K8N Neo4 FI | ATI X1950 XT | 3GB G.SKILL RAM | PC P&C ATX Silencer 470 PSU | Lite-On 18X & NEC 16X DVD | 160GB WD & 300GB Seagate | Saitek Eclipse KB | Logitech G5 Mouse | Antec P180
If my feable mind still functions I seem to recall a conflict on certain chipsets between the Win update and AMD patch for dual cores. You could install either one for 'joy' on dual cores but if you installed both there would be config problems.
Make sure your bios supports dual core. If so, make sure XP is using the correct HAL. In device manager under computer, it should be listed as ACPI Multiprocessor PC.
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* Microsoft® Windows® NT 4.0
* Microsoft Windows 98 Gold
* Microsoft Windows 98
* Microsoft Windows 95 OSR2
* Microsoft Windows 3.x
* Microsoft Windows Millennium
* Microsoft Windows 98 Second Edition
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