Here are things you could try:
1. Check in GPU-Z under sensor tab, what are the temp readings? (If one of the temps is hitting 100Â°C +, re-apply thermal paste).
2. Uninstall all Catalyst driver. Restart PC.
3. Clean it with Atiman Uninstaller v.6.0.0.msi
. Download LINK
Run it with administrator privilege. Some antivirus software will give false positive. Let it restarts to complete the uninstallation.
4. Install Catalyst 11.9.
5. During the install, ignore the error message, if any, and let the installation to complete. Restart PC > folder where the Catalyst package extracted to > find the CCC2 > reinstall and perform repair.
You can RMA and keep doing it without solving anything. Git it another try and see how it goes.
If you keep getting the same error, check your RAM. Boot with only one stick and check every stick if any of them is faulty.Edited by Ken1649 - 10/14/11 at 11:58pm