Cannot enable both cores!

[Ronhrin]

I just bought a Asus M2N-E SLI and a AMD Athlon X2 3800+ and 2GB DDR2 PC6400, and I can't find a way to enable both cores of my cpu.

when I run CPU Z it just says 1 core

and when I run PC Wizard and I go to the CPU stats it says 1 core is disabled.

how can I solve this problem?

 

[dasickninja]

What OS do you have.

 

[heartview]

What does the BIOS say is the core count?

 

[boduke]

Did you do a swap from a single core CPU and use your original Windows install to boot it up? If so you need to load the correct HAL.

 

[Ronhrin]

yes, how can I correct the HAL?

 

[boduke]

Should be able to go into device manager expand Computer, right click what I'll assume says ACPI Uniprocessor PC and click update driver and follow the wizard - windows should detect it....hope that helps....

 

[Ronhrin]

in device manager, under computer, I only got Standard PC. is that it?

 

[quantumsheep]

Firstly are you sure it's the X2 variant not the single core 3800+?

 

[zenmaster]

Yes, This needs to be updated to "ACPI Multiprocessor PC".

Also make sure you have installed all of your motherboard drivers.

 

[Ronhrin]

yes, it'r a brand new X2 3800+

and it cannot be broken

when I run PC Wizard it shows the following on the CPU diagnostics.

Number of Cores: 2
Cores Enabled: 1

 

[dasickninja]

I asked what OS are you using and this is still an important question. If you are running any version of Windows XP with SP2 downloaded you definetly need to look at this:
http://support.microsoft.com/kb/896256

Its the dual core hotfix.

 

[Ronhrin]

I already got it installed

 

[dasickninja]

So you have the dual core hotfix loaded? Then it should be under the ACPI tab.

 

[Ronhrin]

So you have the dual core hotfix loaded? Then it should be under the ACPI tab.

but it's not :\

well, I think it's better to make a clean install...

 

[TechnologyCoordinator]

So you have the dual core hotfix loaded? Then it should be under the ACPI tab.

but it's not :\

well, I think it's better to make a clean install...

Make sure your BIOS is up to date before you do that.

 

[boduke]

device manager, under computer, I only got Standard PC. is that it?

Yes that's it and that's your problem....it should say somthing along the lines of ACPI Multiprocessor PC. Until this is fixed the OS will only recognize and utilized one core.