How about noogle1’s idea of reinstall and then use IObit Uninstaller or something similar to completely remove thereafter.
I think the following free programs are decent.
From cnet / downloads/ Maintenance & Optimization
TweakNow PowerPack 2011 ; WinUtilities Free Edition ,
From cnet / downloads/ Utilities & Operating Systems
Advanced SystemCare Free - comes with powerful uninstaller
CCEnhancer works with ccleaner - positive review at PCWORLD