First and foremost thanks go out to anyone and everyone who can help me with this.
I've recently installed 7, clean install, not an upgrade. I have an Amd Athlon X2 3800+ installed and I installed 7 as a 64bit OS as well. I had this problem before 7 and could never solve it. The core doesn't show up in task manager and I've tried installing drivers from AMD, which say they are the incorrect version for the windows 7 Operating system so i installed them in compatibility mode which didn't seem to solve anything. I've uninstalled and reinstalled the processor and frankly I just don't know what to do! In Pc Wizard 2009, It tells me the number of cores is 2, but then only one core is enabled.
If anyone has any help for me that would be fantastic. Thank you! If you need any additional information please let me know.