Before you install the new card, you need to make sure older drivers for the card you're replacing are uninstalled. AMD offers a resource to complete this step How to remove AMD drivers.

If your issue is related to graphics drivers, you might need to boot into "Safe Graphics Mode" instead. This mode disables kernel video modesetting, which can help resolve graphics-related problems.

The exact details vary from system to system, but most third-party software and drivers ... into the operating system itself. In that case, Safe Mode gives you enough computing power to uninstall ...