Windows 8 not showing all cores

[kaushik37]

I have installed Windows 8 Pro with media center on my Desktop PC. For my AMD FX 6100 it shows only 3 cores, whereas in my earlier version Windows 7 Ultimate it shows 6 cores. How to solve this problem?

 

[Asuveroz]

Try this:

Open "System Configuration". (Windows + R), type in "msconfig" and press OK.
Under "Boot" Tab click on "Advanced Options" and check "Number Of Processors" and select 6.
Press OK.
Reboot.

I hope that works.

 

[kaushik37]

I have tried that many times but failed. Is there any other way? Also, can you please show me any proof that your solution works in Windows 8?