360Amigo System Speedup is a great tool for helping to speed-up your slow PC. 360Amigo System Speedup detects and removes all unused files in your PC (usually as a result of faulty software installs/ uninstalls), optimises your Windows for faster startup times and stops malicious processes from running on your PC. It also cleans traces of your online activities such as your Internet history, cookies, temporary files, logs, invalid links and much more.