with phenoms, though, a dual core and a quad core are essentially the same thing, where a 6 core is a different core platform. No? This could be an issue in recognizing the other cores, since dual cores are technically quad cores already. Maybe im wrong, so i wont hang on to the re-install theory anymore until i find something.
No, you don't need to re-install the OS. I totally disagree.
All you need to do is start the PC in Safe Mode and remove the AMD drivers inclusive of Overdrive and all other supporting programs that came with the Mobo to OC and Optimize the System.
Then reboot into safe mode once again and recheck if everything related to AMD is uninstalled. Remember to Check the uninstall and Remove box when you uninstall drivers for the rig.
Make sure you have set the BIOS to default values.
Then all you need to do is have your OS disc ready with you and startup the rig in normal mode.
Herr_Koos ,Yup, I agree with you, but he needs to uninstall all that AMD stuff 'cos it's already Identified the Processor as an unknown device..... and the moment he says it's AMD it'll go back to the earlier processor and that'll cause a lot of heart burn.
I have to keep changing processors every now and then and I did make the BIOS mistake the first time, the second time onwards it's never caused any trouble....