hey guys as you know i just got my 670 gtx when i installed 310.33 beta drivers it installed fine but i had crashes with bf3. so i decided to install whql driver but here the problem started. i tried going to safe mode uninstall driver from device manager,run driver sweeper do a clean install but nothing worked???. every time nvidia installer says it failed to install nvidia update,nvidia hd audio,physx. i am running win 8 pro x64.