The one issue I've consistently had with AMD is their driver uninstall/update process.
In a perfect world, you'd just leave your existing drivers in place and apply the update on top of them. Or, at the most, use the Windows Control Panel->Programs and Features menu to uninstall the old drivers before updating to the newest ones, which is all that should be required. But, after doing this several times with my old 4870s and 5870s, I have frequently found that the install of the newest Catalyst Control Center will cause a BSoD if you haven't cleaned things up first.
Here are the steps I use each time I want to update my AMD drivers. It's a pain and I don't know if they're all necessary, but following them has always left me in good shape:
1. Go to Control Panel->Program and Features function.
2. Right-click on AMD Catalyst Install Manager and click Change.
3. Follow the prompts to uninstall all AMD-related programs/drivers/files.
4. Open the Device Manager (Control Panel->System->Device Manager).
5. Expand your Display Adapters.
6. Right-click on the ATI Radeon HD 6900 Series.
7. Uninstall. If prompted, choose to delete the drivers.
8. Reboot in Safe Mode.
9. Run Driver Sweeper and clean all the AMD entries.
10. Reboot into normal Windows.
11. Run the latest Catalyst Control Center installer and follow the prompts to install. Reboot when prompted at the end.
I'm pretty sure the latest Catalyst Control Center has some sort of automated update feature these days and I know Steam has started prompting me when updates are available, but I've gotten gun shy about updating any way other than this.
*Edit: Or, in your testing case, for step 10 you'd remove the 6970, install the old Geforce, Reboot into normal Windows, and then install the Geforce drivers.
|