ATI CCC (Catalyst Control Center) is a software used to configure drivers. AMD, the parent company of ATI CCC, boasts that this software gives "complete control of performance and visual quality of your ATI Radeon™ graphics for a personalized visual experience on your PC." One aspect of this control is the ability to personalize the display settings. ATI CCC allows users to control display notifications according to their personal preferences using the ATI Tray Tools.
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Click ATI Tray Tools in the Programs menu.
Click "Tools & Options."
Click "On Screen Display."
Uncheck "Enable On-Screen Display."