[SOLVED] How to enable all CPU cores

[alextv123]

I have this problem i don't know how to fix. I have a AMD Athlon x4 860k Quad core processor and it only shows 1 core and 2 logical cores. In device manager i can see all four cores. And i even tried msconfig, boot and advanced options there i could only select 1 or 2. I checked UEFI and there i could see all four cores as well but i dont know if they are enabled. Please let me know how to fix. Thanks.

 

[rgd1101]

select 2 in msconfig?
some time windows see it as 2 cores/4 threads

 

[alextv123]

select 2 in msconfig?
some time windows see it as 2 cores/4 threads

Its selected 2 right now but it still says 1 in task manager

 

[rgd1101]

reboot?

 

[alextv123]

dont work.

 

[boju]

Did you upgrade to this cpu or using an existing Windows install from a system with less cores?

When you went into msconfig, was the number of processors box already checked? If so, uncheck it and reboot.