4 cores to 2? am i missing something

[PunkRoadkill]

so i'm happily chugging along, not over clocked the i7 yet as I'm still trying to get the system stable, the 4870 X2 just isn't getting on with 64bit vista, many memory dumps etc blamed by windows on the ATI drivers...

anyways onto my point, i've just noticed that bios is now only reading 2 cores from the CPU when before it was happily reading 4, what could I off done to **** it off enough to lose 2 cores? Device manager seems to read 8 threads, but CPUz only reads 4

 

[PunkRoadkill]

i meant CPUz is only reading 2 cores and 4 threads, but device manager is reading 8 threads

 

[PunkRoadkill]

*nvm*

 

[PunkRoadkill]

using the biostar x58
bizarre how it was fine for weeks now this

 

[PunkRoadkill]

toxicredcat your a legend, i changed it from 4 cores to unticked like you said and i have all 4 cores back in CPUz, cheers dude

 

[PunkRoadkill]

i changed it, did it fine on the laptop, didn't like it on the desktop =/