Hey @knowledges, you have a good post. I am interesting about 2 points of your post. Registry cleaning and app startup. About managing the app startup that must be checked, because some applications will be placed into startup even we not register it. Not every startup are important, but we have to know what are important or not. Second, about cleaning the registry, some time ita good, it will fastig our computer. But in some false cleanig it will break the system. There was too many app for registry cleaner, but for me I'm not recommend for any app cleaner. I am more interested to clean the registry with manual. It will be take a long time to finish it, but its most safer than using the app.