AutoRuns is a free software utility by SysInternals (Bought by Microsoft) that can tell you in details about the programs, services, Drivers, WinSock providers, Explorer addons, Scheduled Tasks and lots more. This software utility can be really helpful when you want to find out specific software or plugin that you think might be giving issues to your computer. Just uncheck the corresponding AutoRun Entry and that’s it, that particular software will be disabled.
The MsConfig is provided inbuilt by Microsoft and yes it also tells about startup programs, services, boot options and more. However this free software can be also helpful if you do know what specific program you want to find out and disable. Have a close look at the above screenshot to know what all your computer might be running.