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

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

hardi said:

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?

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