After upgrade, only one core is seen

[Benedicht]

Hi.
I upgraded from vista to windows 7. Its worked like a charm, but there are one problem.
I have a q6600 cpu(4 cores), and after the upgrade windows see just one core.
(In task manager(One Graph per cpu checked)/Resource Monitor)
In the Device Manager under Processors are listed 4 "Intel(R) Core(TM)2 Quad CPU @ 2.40GHz" device.
I reinstalled the old drivers, removed them but no luck.

Any advice?

 

[Brink]

Hello Benedicht, and welcome to Seven Forums.

Check the tutorial below to make sure that everything is unchecked in step 7 there.

Boot Advanced Options - Number of Processors - Vista Forums

If that does not help, then see if resetting the BIOS back to default settings will allow the CPU to be recognized properly afterwards.

Hope this helps,
Shawn

 

[z3r010]

Also check this thread as it could be the HAL settings - http://www.sevenforums.com/general-discussion/2382-core2duo-utilizing-only-1-core.html#post22717

 

[Benedicht]

Thx for the quick replies, i will check them.

And thx Brink to moveing my post to the right forum.

 

[Benedicht]

The secound tip worked.
Thank you all.

 

[Brink]

Benedicht,

I'm happy to hear that you got it sorted. Thank you for posting back your results.