How to disable autorun of any software in Windows 7 without any software

Sometime few some software auto start with pc starting , for this reason your pc become slow to start. in market/online you can get many software ,those are can disable software autorun when pc start. but in windows 7 , you can do it by manually with ant software install!!!!

just do it , step by step

step.01 : click on "Start Icon" & select "Control Panel" .

step.02 : click on "Administrative Tools". (if you icon view as category then select "view by: large icon")

step.03 : now click on "System Configuration".

 step.04 : select "Startup".

step.05 : in the list unmark those software , you don't want autorun when pc startup (eg. Yahoo messenger , skype , Gtalk , u-torrent  , IDM etc) and select "OK"

step.06 : now click on "Exit without restart" . DONE...