I have inspiron 15 3521 currently on win7 64bit
and high-performance graphic option seems not working with radeon hd 7670.
I think the problem is current version of CCC issue.... 2012.0806.1156.19437
Could I get previous version of catalyst control center? If not, plz make an update....
Request you to uninstall Intel and AMD drivers from programs and features option then you may use the below links and install Intel first and then AMD in sequence:
Do reply with your findings.
Thanks and Regards,Kiran KumarDell Social Media and Community ProfessionalOrder Status : http://dell.to/1fgKSTrDownload Drivers : http://dell.to/1hcxG98