how to remove unwanted object at start up

u can do it in many ways permanent and temporary depends upon your requirement
1.hit win+r or simply click on start and click on run now type msconfig you see a window with some tabs go to start up tab and uncheck unwanted entries and press ok and restart the pc and you done
2.go to start ->program->startup and delete unwanted entries
3.at start up press and hold shift button this is temporary