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Windows 7: Only one core detected - Popular solutions don't work

09 Feb 2010   #1

Windows 7
 
 
Only one core detected - Popular solutions don't work

Hello folks,

My Windows 7 (Professional from MSDNAA) doesn't recognize both cores of my T 5550. Device manager shows 2 CPUs, so does Intel's CPU identifier tool. However, most Applications and 7's Performance Monitor detect only one.

I tried the msconfig solution I found in various forums but I can't select 2 Processors in the startup options. The "detect HAL" checkbox I saw in various Posts isn't there either. I also tried editing the environment variables but it didn't help either.

Ideas?

Thanks in advance
hardi

My System SpecsSystem Spec
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09 Feb 2010   #2

Windows 7 Professional x64
 
 

I fixed this problem once by simply going into MSCONFIG and advanced boot options and unchecking the CPU box and restarting. Maybe this will help you.
My System SpecsSystem Spec
10 Feb 2010   #3

Windows 7
 
 

thanks for your answer but no - won't help. It's unchecked by default so i tried checking it - reboot - uncheck - reboot... no effect.
My System SpecsSystem Spec
.


10 Feb 2010   #4

Microsoft Community Contributor Award Recipient

Windows 7 Ult, Windows 8.1 Pro,
 
 

Quote   Quote: Originally Posted by hardi View Post
Hello folks,

My Windows 7 (Professional from MSDNAA) doesn't recognize both cores of my T 5550. Device manager shows 2 CPUs, so does Intel's CPU identifier tool. However, most Applications and 7's Performance Monitor detect only one.

I tried the msconfig solution I found in various forums but I can't select 2 Processors in the startup options. The "detect HAL" checkbox I saw in various Posts isn't there either. I also tried editing the environment variables but it didn't help either.

Ideas?

Thanks in advance
hardi
Certain systems require a bios update in order to detect certain CPU's correctly.
Do you have the latest bios installed on your system?
My System SpecsSystem Spec
10 Feb 2010   #5

Windows 7
 
 

I doubt that's the problem. It's a laptop (Acer 5290g), so it should be able to use it's own cpu properly and dual core worked fine under vista
My System SpecsSystem Spec
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