I recently bought a new PSU and wanted to overclock my GPU some more and I need ATI Tool for the artifact testing. I download the install file and it says that th previous version was detected, and won't let me install. All I can do is repair, or remove. So I try repair, but it doesn't find atitool.exe and fails. I try remove, and it just exits the install program. So basically I can't install or remove ATI tool. What should I do? I also tried manually deleting by searching for ATI tool and atitool and deleting everything but it still won't install properly. What's the problem?