I wanted to try the new 13.1 drivers and read through the forum to see what others were saying, somebody recommended using the Amd cleanup utility before installing - so i tried it and from the moment after installing it I was running into serious issues. Issues included being locked out from running most programs in control panel, clicking on them had no effect, and not being able to erase any files in c:/program files or c:/windows, "access denied" would appear. I am logged in as admin. After running Amd Cleanup utility to remove 12.11 drivers resulted in a registry edit being made each time windows would load, one of these registry changes was flipping the UAC enable/disable switch. Uac was off before running the utility, I downloaded "process monitor" and watched the startup processes while my pc booted. The following registry key was being reset to default each time. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System EnableLUA = 1 (uac on) I'm aware Metro interface is disabled if EnableLUA = 0, but this key being modified at each boot must be linked to the issues being seen such as being locked out from opening UAC. Also I had limited access to control panel applications and was not able to erase files in any sub directories of the Windows drive. I didn't know Amd cleanup utility was responsible until restoring my system to an earlier time, and reinstalling the cleanup utility afterwards which brought all the issues back. Be weary of this utility.