Please tell me what it is that you disabled and the corresponding Service is.
Obviously something is set to start on boot. If it's a legitimate process you don't want to start on boot, it can be taken off the Startup Menu using the msconfig utility. if it doesn't need to start on boot.
RunAs>> Allows a user to run specific tools and programs with different permissions than the user's current logon provides.
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But if it belongs to a malware process or if malware damaged the file extensions or permissions, it will need to be handled differently.