There is an alternative to using msconfig. I find the free software CCleaner very helpful in controlling what programs and components run at startup (there are always a lot more of them than you think). The list shown in cCleaner is always much longer than the listing under Startup programs. But you will need to know what you are doing in order not to mess up your system.
Run CCleaner > Tools button > Startup button. Carefully Disable or Delete.