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You can go in manually and do it, but it would take forever. There are a few software options that could help make it easier. CCleaner and Bleachbit come to mind, although I would greatly prefer Bleachbit for this purpose. I’m sure there are other choice as well, but those would probably be my top two. However, be careful using either of them. If you don’t pay attention to what you are doing you can cause yourself some serious problem, especially if you start messing around with registry cleaning (which you should not do in my opinion).