windows 7 not showing 2 CPUs (pentium 4) 1

[jared5494]

When going to task manager in XP, it always showed 2 CPUs for a Pentium 4 (3.6 GHz Prescott). I tried doing the same in Windows 7 and its just showing one CPU.

* I tried going to View > CPU History but the only option is greyed out (one graph per CPU).

* When going to msconfig > boot > advanced options, under number of processors, all I see is one.

I know technically a P4 doesn't have 2 cores, one is just virtualized. I am just making sure i shouldn't be seeing the 2nd CPU in task manager/msconfig.

system specs:

Asus P52AD2-E Premium Motherboard
Intel 3.6 GHz Prescott Processor

Thanks for any insight!
-Jared

 

[jared5494]

attached the CPUZ info.

also, checked the bios and hyper-threading has been enabled.

 

[kjv1611]

In the following forum thread, someone linked to yet another thread, where they mentioned using MSCONFIG to tweak related settings. Might be worth checking into:

http://setiathome.berkeley.edu/forum_thread.php?id=55799

Here's the thread referenced in the above link:

http://www.sevenforums.com/hardware-devices/9856-hyperthreading-not-showing-up.html

Do you think that it may have gotten disabled accidentally, while tweaking something else? Have you used/tried using any 3rd party system tweaking programs?

You may be able to get the desired results from something like Tweak7.

 

[jared5494]

I found the issue. i had ACPI 2.0 enabled on my motherboard, but somehow the ACPI APIC support hadn't been enabled. I turned that on and Windows 7 instantly recognized it and everything is running substantially better.

thanks kjv1611 for your help! it is greatly appreciated.

 

[kjv1611]

Glad you found the solution, and thanks for posting back with what fixed it.