Please provide your system information including model numbers:
- System (if available)
- Operating System Version (and if it was an upgrade installation)
- GPU driver version
- Motherboard, BIOS version, and chipset driver version
- If Display Driver Uninstaller was used, did you do so in Safe mode?
- If you haven't tried a clean installation of the Cataylst drivers, you might consider giving that a shot: How to perform a clean driver install
System - Dell Optiplex 9020
Operating System - Windows 7 Professional Service Pack 1
CPU - Intel Core i7-4770 @ 3.4 Ghz
I don't know what the other information is. I did do a clean
installation of the Catalyst drivers.